It's a powerful scene.
Especially wehn Tony grows frustrated and says:
"You and my father, you used to run North Jersey together!"
Junior looks to perk up and says "We did?"
"That's nice"...

All those years risking life and limb and prison time, the notoriety, the lifestyle, in the end it was merely a trifle to Junior.
I wonder if that was a big wake up call to Tony.