A Notre Dame star was on the receiving end of the craziest TD of the NFL playoffs

Caleb Williams' last throw in regulation was a backpedaling, fourth-down rainbow that landed in former Notre Dame star Cole Kmet's hands in the corner of the end zone for an incredible touchdown.

It was the latest demonstration of the kind of improbable plays members of the Chicago Bears have put together in the second half of the NFL season. Unfortunately, even with Williams' and Kmet's efforts to keep Chi-Town's season going, it wasn't meant to be, and the Bears eventually lost in overtime to the Los Angeles Rams, 20-17.

That doesn't take anything away from the play near the end of regulation. As it turns out, the ex-Notre Dame star was a part of one of the most improbable plays in NFL Playoff history.

Cole Kmet hauls in improbable fourth-down TD on Caleb Williams’ final regulation throw as the ex-Notre Dame star's career hits crossroads

Williams retreated under heavy pressure, scrambling backward to the 40-yard line, and launched a pass that traveled 51.2 yards through the air to the back corner of the end zone into Kmet's waiting arms. It was the longest completed pass by air distance in the red zone since 2016, with a completion probability of just 17.8%, according to NFL Next Gen Stats.

The former Notre Dame star did his part as well. Kmet fought off his defender and lost him in coverage to the point where he stood wide open in the end zone. Considering the near Hail Mary nature of the pass, if he had been well covered, there's a better than average chance it's either intercepted or knocked down.

Unfortunately for the Bears, the come-from-behind tying effort wasn't enough. In OT, the Rams made short work of the game, winning on a field goal that sent them to the NFC Championship against the Seattle Seahawks and the Bears home after one heck of a first season under new head coach Ben Johnson.

If Sunday night was his final game in Chicago, the former Notre Dame tight end certainly went out on a high note. Kmet caught 3 passes for 31 yards and a touchdown. It was a nice exclamation point on a season where he had his lowest reception tally since his rookie season (30) and yardage (347), which were only more than that same rookie campaign.