Here's a bit more to go off re the ANZAC group.
I ran through the very shaky video again a few times, and grabbed these three.
While I was struggling to adjust the focus setting back to auto, the left hand aircraft had peeled off. It only became obvious when I re-ran the video
This first one is the lead aircraft.

This is where the LH aircraft peeled off.

And here's the tail-ender, clearly an Ozzie roundal.

Does it help?
Thanks for your interest.
Regards,
Sam