Talk Fantasy Football

An unclear situation occurred during a game:
Home coach's Hobimp flops a challenge with 2 unused Momentum counters, so the 2 Momentum counters are gained by the Away coach.
He activates his Hobimp and flops the challenge as well.
1) Are the Momentum counters lost at this point? Or 2) do they keep switching from Home coach to Away coach and the other way around so long as their players keep flopping their challenges?
I think 2) is right, but I'm not sure.

2 is right. The momentum counters shift to the other coach (i.e. back to the home coach).

I've played a game where the momentum built to six over 4 turns ending in flops.

Thank you very much for the clarification!