Kettle on a few minutes before anthems. Water and bag in as they come out of the tunnels, by the end of anthems it is ready (depends on anthems though, Ireland home games are a different story). Steep for three minutes, bit of milk and ready for kickoff. As soon as the halftime whistle blows, kettle on again.
Of course, for club rugby this is different, so I have to do it a little earlier. Usually when they have the team graphic up and are going through the 23.
No sugar? No spirits?