Background: I got a male Bengal kitten at 3 months. When he was 7 months, I added a male Savannah who was 12 months. I isolated them for about a week, then did controlled meetings for a few days, and they've both been out together 24x7 since. I also have Feliway Multicat diffusers all over the house.
They're now comfortable enough with each other to sleep as close as a foot apart and can peacefully pass even closer when just walking around, but any touching (by either cat) inevitably turns into a fight/chase for a few minutes until they both get tired and lay down. Neither cat hides or makes noise or shows other signs of actual fear, and there are never injuries, so I'm reasonably sure they're just playing even though one or both will flatten their ears at times.
However, since they're both the aggressor in these fights and there is no clear victor, I can't figure out which of them is the alpha. Is it possible they haven't figured it out yet either? If so, how long could it take, and will they calm down a bit when they do, or is this how things will always be between them?