def filter_orphan_channel_anns(
        self, channel_anns: List[GossipForwardingMessage]
    ) -> Tuple[List, List]:
        """Check if the channel announcements we want to forward have at least 1 update"""
        to_forward_anns = []
        orphaned_channel_anns = []
        for channel in channel_anns:
            if channel.scid is None:
                continue
            elif (channel.scid in self._chans_with_1_policies
                  or channel.scid in self._chans_with_2_policies):
                to_forward_anns.append(channel)
                continue
            orphaned_channel_anns.append(channel)
        return to_forward_anns, orphaned_channel_anns
Check if the channel announcements we want to forward have at least 1 update
electrum/channel_db.py