amackayj It should work and does in most cases. The thing to account for is that due to the number of instructions being sent around those half hour (Agile) marks, and depending on some retries, it is possible that we get overlaps.
We'll dig a bit deeper into the logs for what happened on this occasion.
You didn't have adjacent slots though - you had Agile charge scheduled from 02:00 - 06:00. And then exports scheduled within that...?