I don't trust much of what Roemer says, he's was just too self-promoting and sketchy about just how much he knew about the top of Outfit (ie. Ferriola, late-night meetings with Joe Batters etc.). For all that we know it could have known that these guys were back-room bookies giving him Outfit gossip.

IRRC, the Top-Echelon program was not all that well developed until the mid 1970s and with a couple of exceptions (Scarpa and Steve Flemmi), most of the "Top-Echelon Informants" were pretty small fish.