was there any mention other side effects like if the stand seperation happens, the user cannot access or use the stand's powers?
In that case yeah, but that was more due to the fact that the Stand and the host were in completely different dimensions, despite that, the Stand (Purple Haze) kept trying to find its host to help him and Fugo could summon and manifest him despite being a world apart. Though I will say, I doubt Accel would try this even if he could, he can't see Cream, he wouldn't know it exists to even try it, he'd just see a homoerotic buff dude vanish in and out of existence that can make things disintegrate. Unless he has the needed ESP, in which case ignore that point.
Also is still on debate since we are factoring in personalities. Because if vanillia starts in his own void, he will try and attack while he stays safe within, which will do jackshit to accel because of his solar system level durability.
The void ignores durability, which is how Ice attacks in character, he basically just turns into a giant **** off sphere of nothingness and rams into his foes, he almost never does anything except void and he only ever went with throwing a punch once he was physically caught and held in place, obviously Cream or Vanilla can't harm Acel physically as they're only 8-C, they are 100% utterly incapable of inflicting any harm. Except with their ability, whatever it passes through disintegrates and the remnants, if any exist still, get sent to a dark dimension. This ability ignores conventional durability, in order to withstand it one would need to resist void manip/deconstruction+BFR. Accel unfortunately lacks those, as such, Cream's void can actually harm Accel, albeit it's the ONLY thing he can do that can harm him, everything else does **** all due to the durability and hax.
The only way vanillia will kill accel is if the stand swallows him into the void, but since he starts inside his own void to begin with, he'd be rolling around and soon realising accel can't see him. Though this type of accel doesn't play around, but if accel isn't aware ice's appearence to know him as the enemy thats been hammering him from ice's own void to begin with. He'd just stand there trying to figure out who he is and ice can swallow him whole without much difficulty.
Ah I get you now, you're kinda right here, Accel wouldn't really know what's going right away, in that quick lapse of trying to figure it out, he'd probably get ****** by the void. Given I doubt his first guess would be that the dude turned into a void instead of something like teleportation or invisibility.
If accel knows he is the enemy to look out for and kill. The moment Ice gets out of his void, Ice is ******.
This is also true, if Accel gets a chance, he one shots. The issue is, would he get that chance?
I'm not sure, VI in character immediately goes into his void (if possible, he engages while already in it and tries to take his foes from behind), so we know for a fact he's gonna be in it or at least will do so immediately. So it depends if Accel can kill him before he gets a chance to go into the void, or kill him before he himself is taken out. Ice does have a few advantages here in that Accel can't see Cream, so he might not expect Ice to suddenly vanish (which in reality he'd be consumed by Cream and turn into a void), and he obviously isn't gonna be able to see the void, given it's a void, can't see what doesn't exist.
If he starts in the void I'd give it to Ice 99% of the time, if he starts out of it, it depends if Accel can kill him in that split second before he turns into a void (given he WILL be doing that immediately), do you think Accel can manage that? Speed equal mind you so what I'm asking is more if Accel has attacks that spawn atop his foes basically so he can kill Ice instantly.