High Plane did an Immelman while bottom plane did a Split-S ( Split-S on 1st merge shows sign of being NEW or unknowing how to engage for most part)
The Reason the top plane did an Immelman is to slow his spped so he could turn tighter/ also to go vertical to retain E in the potential _E category in case he needs it to evade further in to the fight ...
as it looks in the picture, it appears the top plane is now in a sense doing a drag waiting for the lower plane to flop. Only thing is he is to far away from his opponent to really capitalize on it.....
my quick take of the picture.......