+ // If we see locking block before receiving remote funding_locked, we broadcast our
+ // announcement_sigs at remote funding_locked reception. If we receive remote
+ // funding_locked before seeing locking block, we broadcast our announcement_sigs at locking
+ // block connection. We should guanrantee to broadcast announcement_sigs to our peer whatever
+ // the order of the events but our peer may not receive it due to disconnection. The specs
+ // lacking an acknowledgement for announcement_sigs we may have to re-send them at peer
+ // connection in the future if simultaneous misses by both peers due to network/hardware
+ // failures is an issue. Note, to achieve its goal, only one of the announcement_sigs needs
+ // to be received, from then sigs are going to be flood to the whole network.