I would keep a close eye. Problem is they don't necessarily avoid each other...they can fight, sleep together, then fight to the death...
So a close eye is wise, the only clues might be the duration of the squabble.....like a fast shrieking, scuffle and that's it. Over and done with? Is one ham showing dominance in the cage, or behaving more territorial? If it were me, I think a second fight would give me enough cause to separate them...better safe than sorry. They mainly fight at night as well, so we may miss a few rounds
Once one of them has drawn blood, thats the proverbial red line to separate immediately. I know its hard to figure out if they are romping and playing or its getting serious....keep us posted