Faction assault attacks

If people all attack at the same time does it count to the overall progression ? Or is it just multiple people attack the same wave and it’s a waste of attacks?

It is a waste of attacks, technically, however it’s now so easy, big chunk of factions can kill t5 in under 40 hits so hitting same time really helps to give people something to hit. Without it would be easy to let’ everyone hit once and finish negan without everyone getting a hit in.