Pro Dual DBW Hbridge 1 and 2

Swear I saw a post or thread on this, can’t find it again or in the Pro software guide. When using dual dbw are we supposed to use H bridge 1 and 3?

I tried using 1 and 2 and they have a crazy cross talk. swapped 2 to 3 and it actually finished a calibration.

Anyway, thought I’d ask for clarity and potentially pass on a pro tip.

You should be able to use any combination of h-bridges.

What do you mean by “cross talk”?

When I would run the test on throttle 1, throttle 2 was making noise. Same if I ran throttle 2 test, throttle 1 would make noise.
I would get failed test after failed test. Worked fine after switching from Hb2 to Hb3 though