Do barrels block a road to the castle, and does the end-game barrel bonus need a road connection?

Question

Accepted Answer

No. A barrel does not block a road, so several barrels on one road can all connect to the castle. The end-game barrel bonus counts barrels even when they are not connected to the castle; only income needs the road.

Isle of Skye: From Chieftain to King

Do barrels block a road to the castle, and does the end-game barrel bonus need a road connection?