BLE hop limit field

Using Arduino Networking, Protocols, and Devices
#1

I was reading about Bluetooth mesh networking on Wikipedia and came across this:

Bluetooth Mesh is a flood network. It’s based on the nodes relaying the messages: every relay node that receives a network packet that authenticates against a known network key that is not in message cache, that has a TTL ≥ 2 can be re-transmitted with TTL = TTL - 1.

This seems to imply that the the packet won’t be re-transmitted once TTL <= 1. Is this correct? I expected the last part to read “that has a TTL ≥ 1 can be re-transmitted with TTL = TTL - 1.”

#2

Apparently this refers to the TTL field of an incoming packet before the receiving node has decremented the field. Since the TTL field is checked after the field is decremented, a node that receives a packet with a TTL of 1 would decrement the field to 0, check the field, then discard the packet.

#3