Probably a coincidence. There's a fair bit of last name recycling - in Season 3, Meadow comes home and Carmela, thinking it's AJ, yells "Lindsay Blundetto called."

That last name wasn't of any significance until Season 5.

Walden Belfiore appears in the last half of Season 6, which was Angie Bonpiensero's maiden name, but no actual connection was ever explicitly stated.