Compatibility · Mirror
Time Is, Time Was
Brazen Head and another Brazen Head
Two Brazen Heads together ask their AIs forty questions an hour and expect forty answers. It is a gloriously efficient arrangement, right up until both act on the same wrong fact.
Together
Instant answers, shared instantly. They win every quiz night they enter.
Friction
Neither pauses to check, and by the time anyone does, time is past.
Mirror. Easy, but you will both make the same mistakes. The same House and the same Motion.