I don't know. If Ola knew Tom from the "old days" this presumably would have been when Tom was counselor-in-training, right? Tom would have spent a lot of time around Vito just as Sonny would have. Maybe Fredo spent less time on the "inside" than his brothers did but I certainly think Fredo would have known the major players on Roth's side-at least to say hello to.
I'm guessing the old days would have been before Roth relocated HQ to Miami-say 1930-1940 or so.
"When the snows fall and the white winds blow, the lone wolf dies but the pack survives."
Winter is Coming
Now this is the Law of the Jungle—as old and as true as the sky; And the wolf that shall keep it may prosper, but the wolf that shall break it must die.
As the creeper that girdles the tree-trunk, the Law runneth forward and back; For the strength of the Pack is the Wolf, and the strength of the Wolf is the Pack.
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