So here is a follow up question: If the armored HTs are in the same hex and firing at an aircraft in AA mode , can this done?
per 7.55 MANDATORY FG: If Good Order units/weapons in the same Location are going to fire at the same target (i.e., at both the same Location and the same unit and the same “simultaneous†[8.1] MF/MP expenditure;
see D3.5) during the same phase they must form a FG [EXC: Fire Lane; 9.22]; they may not attack separately except with ordnance/FT/DC or the subsequent shots of multiple ROF weapons (9.2).