So work backwards and start the Anthems bit earlier to keep the kickoff at the Scheduled Broadcast time.
If it doesn't make the Live broadcast, so what?
Timing is all dictated by sanzar in consultation with broadcasters. They want away team running out with 2.5 minutes to go. Home team running out with 1.5 to go and then kick off.
They don't want to stop of flow for a couple of NATIONAL anthem between two teams that aren't NATIONS.
Even have to get approval for the ode. Which is usually forthcoming.