the sequencer only records 16 events per page or more importantly 16 within certain windows of time - no more no less snapshots (note or not) - they can’t overlap, but notes can be microtimed to almost effectively double up - if you want longer sequences than 64 steps, you’re looking firstly at using chains or other audio tricks (inc arps) to possibly get more mileage out of your 64 trigs per pattern !