When I look at the details of answered calls, I see a couple of calls marked with a red "Ongoing" in the "Disconnection" column at the bottom. When picking another time window, these calls correctly show up as disconnected. The cause is clear: A call started before midnight on a specific day and ended on the next day. It would be nice if you could configure an amount of time where Queuemetrics looks for disconnections when displaying detailed reports.