While regular season OT rules stay the same, both teams are guaranteed possession in the playoffs now regardless of if a TD is scored.
The NFL’s overtime rules have been a topic of conversation for a long time. They used to be sudden death, with the first score of any time winning the game, which many complained put too much emphasis on the coin toss. That led to an update to the rule that made it so the team that got possession first only won if they scored a touchdown, with the other team getting a chance at striking back after a field goal — and it being sudden death from there.