Nope, it's not a falling object so those rules don't apply, each step is just a peasant with a pole passing it from person to person. d20 + Dex to hit and 1d4 i

Nope, it's not a falling object so those rules don't apply, each step is just a peasant with a pole passing it from person to person. d20 + Dex to hit and 1d4 improvised weapon damage on a hit as thrown by the last peasant.