you know how Saitama kicked Garou's ass like 3 times before even realizing who he was?
Imagine a bidirectional version of that; take a 3 stooges comedy routine where they're doing slapstick gags like opening a door without looking and knocking someone over, or turning around while carrying a 2x4 on their shoulder and smacking someone in the face, except the power level is turned up until the knob snaps off and they're, like, accidentally backhanding each other through walls without ever really being aware of the others' presence.