The toss of the first T20I in Brisbane has been delayed due to bad weather

Given the current weather conditions and the late start to the match, it's likely that we may see a reduced-over game. As you mentioned, T20I matches typically have a buffer of around three hours to accommodate rain delays. However, with the persistent rain and the late start, it's possible that the match could be further reduced to a 5-over-per-side affair.

Ultimately, the extent of play will depend on how quickly the rain subsides and how efficiently the ground staff can prepare the pitch. It's a challenging situation for both teams and the fans, but hopefully, we'll get to see some cricket action, even if it's a shortened game.