Bilbo cannot play NFFATROD because it is an event, and events can only be played in the phase specified on the card.
Yeah, and conditions are ALWAYS played during the fellowship phase, even if the card says otherwise.
ALWAYS.
Diversion is a regroup event. Clearly, Decipher intended it to be played during a phase that does not match its phase action.
The only logical solution to the debate is that there is no real solution. People can bicker about what Decipher intended when making mistakes, and be experts of their own opinions. I'm okay knowing the stuff that matters, and having fun playing.