With regard to departures prior to the AUI flight, I have just checked (on FR24) and in the hour preceding AUI's departure I only saw two; an AtlasGlobal at 01:47Z and a QTR at 02:08Z. That then leaves a gap of 36 minutes prior to AUI's departure. We don't know of course but 06:00 local sounds like a good time for a shift change. That would have made the AUI the first departure after 06:00 (and indeed after the QTR at 05:38 local).