local multiplayer V local multiplayer through online?

In the extended Superbowl ad it looked like two groups of people playing Splatoon 2 on local multiplayer fighting the other group through online. If that true…wow. I wonder if that means a game could support up to Eight player local multiplayer vs Eight player local multiplayer through online?

This was something I've been wondering about for a while.

Discussion started at here by ReifuTD

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