Originally posted by DrEll:
There was NO possibility of a third possession. I don't know why you keep harping on that.
In fact, Chiefs defensive tackle Chris Jones confirmed the logic postgame, pointing out how his team had prepared for the new overtime rules and that they were going for two if San Francisco scored a touchdown.
"We talked through this for two weeks," Jones said, via the Ringer's Lindsay Jones. "How we was going to give the ball to the opponent; if they scored, we was going for two at the end of the game. We rehearsed it."
Safety Justin Reid revealed to The Ringer that Kansas City had discussed the new overtime rules as far back as training camp, while several 49ers players acknowledged during the postgame interviews that they weren't aware of the new rules.
Additionally, quarterback Patrick Mahomes confirmed that the Chiefs were going to defer had they won the toss in order to know what was needed from the offense ahead of time.
"Yeah we were going to kick if we got it. They let us know what they were going to do, so we can go for it on that fourth down," Mahomes said after the game.
The day after the Super Bowl, Mahomes shared a similar sentiment to his defensive tackle, acknowledging that the Chiefs were certainly going for two, derailing Shanahan's vision of getting a third possession.
The Chiefs were going for the kill shot whether they received first or second. There was no plan for matching scores. They weren't thinking about holding the Chiefs to 7 or 3, then going for the win. This is all Kyle's thought process, that's why even Chiefs players called him out on it.
"They're crazy," Jones said of the 49ers. "Because the overtime rules has changed where both teams get the ball no matter who scores. So, originally, you want to let the other team get the ball, stop them, holding (to) three, so you know what you got. Or if you stop them, they punt it, then all you have to do is kick three."
Tell me Chris Jones doesn't know what he's talking about, but Kyle does 
They weren't guaranteed to score a TD. They weren't guaranteed to score anything at all, just like us. That allows for the possibility of a 3rd possession. The receiving team can even force a 3rd possession, as a worst case scenario, with their decision making in the first possession.
Their plan was to go for two
IF we scored a TD,
IF we kicked a PAT, and
IF they scored a TD on the second possession.
A 3rd possession is a possibility regardless of what each team's goals are. What an absolute dolt.