diff --git a/netfetch/src/ca/conn.rs b/netfetch/src/ca/conn.rs
index 5129c37..1700f42 100644
--- a/netfetch/src/ca/conn.rs
+++ b/netfetch/src/ca/conn.rs
@@ -414,6 +414,7 @@ struct ChannelOpsResources<'a> {
     cid_store: &'a mut CidStore,
     init_state_count: &'a mut u64,
     channel_set_ops_flag: &'a AtomicUsize,
+    time_binners: &'a mut BTreeMap<Cid, ConnTimeBin>,
 }
 
 pub struct CaConn {
@@ -453,7 +454,7 @@ pub struct CaConn {
     series_lookup_futs: FuturesUnordered<
         Pin<Box<dyn Future<Output = Result<(Cid, u32, u16, u16, Existence<SeriesId>), Error>> + Send>>,
     >,
-    conn_time_bin: ConnTimeBin,
+    time_binners: BTreeMap<Cid, ConnTimeBin>,
 }
 
 impl CaConn {
@@ -506,7 +507,7 @@ impl CaConn {
             channel_info_query_tx,
             series_lookup_schedule: BTreeMap::new(),
             series_lookup_futs: FuturesUnordered::new(),
-            conn_time_bin: ConnTimeBin::empty(),
+            time_binners: BTreeMap::new(),
         }
     }
 
@@ -699,11 +700,26 @@ impl CaConn {
         cid_by_name: &mut BTreeMap<String, Cid>,
         name_by_cid: &mut BTreeMap<Cid, String>,
         cid_store: &mut CidStore,
+        time_binners: &mut BTreeMap<Cid, ConnTimeBin>,
     ) {
         let cid = Self::cid_by_name_expl(&channel, cid_by_name, name_by_cid, cid_store);
         if channels.contains_key(&cid) {
             warn!("TODO actually cause the channel to get closed and removed  {}", channel);
         }
+        {
+            let a: Vec<_> = cid_by_name
+                .iter()
+                .filter(|x| x.1 == &cid)
+                .map(|x| x.0.clone())
+                .collect();
+            for x in a {
+                cid_by_name.remove(&x);
+            }
+        }
+        channels.remove(&cid);
+        name_by_cid.remove(&cid);
+        // TODO emit in-progress before drop?
+        time_binners.remove(&cid);
     }
 
     pub fn channel_remove(&mut self, channel: String) {
@@ -713,6 +729,7 @@ impl CaConn {
             &mut self.cid_by_name,
             &mut self.name_by_cid,
             &mut self.cid_store,
+            &mut self.time_binners,
         )
     }
 
@@ -936,7 +953,9 @@ impl CaConn {
         // TODO handle error better! Transition channel to Error state?
         let scalar_type = ScalarType::from_ca_id(data_type)?;
         let shape = Shape::from_ca_count(data_count)?;
-        self.conn_time_bin.setup_for(series.clone(), &scalar_type, &shape)?;
+        let mut tb = ConnTimeBin::empty();
+        tb.setup_for(series.clone(), &scalar_type, &shape)?;
+        self.time_binners.insert(cid, tb);
         let subid = self.subid_store.next();
         self.cid_by_subid.insert(subid, cid);
         let name = self.name_by_cid(cid).unwrap().to_string();
@@ -1217,7 +1236,11 @@ impl CaConn {
                     let item_queue = &mut self.insert_item_queue;
                     let inserts_counter = &mut self.inserts_counter;
                     let extra_inserts_conf = &self.extra_inserts_conf;
-                    self.conn_time_bin.push(ts, &ev.value)?;
+                    if let Some(tb) = self.time_binners.get_mut(&cid) {
+                        tb.push(ts, &ev.value)?;
+                    } else {
+                        // TODO count or report error
+                    }
                     #[cfg(DISABLED)]
                     match &ev.value.data {
                         CaDataValue::Scalar(x) => match &x {
@@ -1714,9 +1737,14 @@ impl CaConn {
                     res.cid_store,
                     res.init_state_count,
                 ),
-                ChannelSetOp::Remove => {
-                    Self::channel_remove_expl(ch, res.channels, res.cid_by_name, res.name_by_cid, res.cid_store)
-                }
+                ChannelSetOp::Remove => Self::channel_remove_expl(
+                    ch,
+                    res.channels,
+                    res.cid_by_name,
+                    res.name_by_cid,
+                    res.cid_store,
+                    res.time_binners,
+                ),
             }
         }
         res.channel_set_ops_flag.store(0, atomic::Ordering::Release);
@@ -1731,14 +1759,17 @@ impl CaConn {
             cid_store: &mut self.cid_store,
             init_state_count: &mut self.init_state_count,
             channel_set_ops_flag: &self.channel_set_ops.flag,
+            time_binners: &mut self.time_binners,
         };
         Self::apply_channel_ops_with_res(res)
     }
 
     fn handle_own_ticker_tick(self: Pin<&mut Self>, _cx: &mut Context) -> Result<(), Error> {
         let this = self.get_mut();
-        let (obj, insert_item_queue) = { (&mut this.conn_time_bin, &mut this.insert_item_queue) };
-        obj.tick(insert_item_queue)?;
+        for (_, tb) in this.time_binners.iter_mut() {
+            let iiq = &mut this.insert_item_queue;
+            tb.tick(iiq)?;
+        }
         Ok(())
     }
 }