I've seen all types of situations that I do not understand in the gobbler world of breeding.
Last year on one ranch, the birds were grouped up in large flocks of hens/toms/jakes until the hens were on the nest. Often times, the hens would come off the nest to intercept the preceived intruder (i.e. my callin).
I kept expecting the birds to break up into smaller groups, but once the hens were nested, the jakes and toms strolled around in groups together.
I have no idea how to tell a 2 year-old from a 5 year-old? But I have often seen mature birds that seem to roam together most of the season from anywhere from 2-4 birds. I call them "party birds." Sometimes these bachelor groups are less apt to hang up that singles (maybe the numbers give them conifdence?); when they come, they come.