Do Colts have a quarterback controversy brewing?

The Indianapolis Colts (2-3) suffered their third loss of the season in Week 5 to the Jacksonville Jaguars (1-4), but it wasn't because of their offense.

The Colts offense recorded a season-high 447 total yards and 34 points on Sunday despite losing to the Jaguars, 37-34.

Backup quarterback Joe Flacco filled in nicely for the injured Anthony Richardson (oblique), passing for 359 yards, three touchdowns and zero interceptions.

Following Flacco's impressive performance, some are beginning to question if Indianapolis should stick with him even when Richardson is healthy, and there's a good argument for it.

In two games, Flacco has thrown for 527 yards, five touchdowns and zero interceptions for a league-high 115.6 passer rating.

Richardson, on the other hand, has thrown for 654 yards, three touchdowns and a league-leading six interceptions for a lowly 60.2 passer rating. He's also rushed 141 yards and a touchdown, but that's how he got hurt.

While the 39-year-old Flacco has been playing even better than expected, the Colts still drafted 22-year-old Richardson with the No. 4 overall pick a year ago to be their future franchise quarterback.

ESPN insider Adam Schefter believes that it still the case.

"When (Flacco) comes in, he delivers almost always, and he's got experience. He's got production. He's a guy that's valuable to have, and it's amazing that there weren't more teams interested in a guy like this," Schefter said on "The Pat McAfee Show." "...I think that when Anthony Richardson is fully healthy and they're comfortable, I think he goes back to the starting lineup, but it gives you an awful lot of peace, security, comfort to know that you have a quarterback in Joe Flacco that you can turn to."

Flacco knows how it feels to be the starter and have a player come in and take his job.

In 2018, Flacco's final year with the Ravens, they drafted Lamar Jackson with the last pick in the first round. Flacco got hurt, which allowed Jackson to shine, and the rest is history.

"I've been in that spot once. It was my last year in Baltimore. I hurt my hip and, man, I did not wanna let Lamar get out there. That's for sure. That was my team, and that was very hard," Flacco said, via James Boyd of The Athletic. "...At the same time, you don't want to put your future career in danger ... Sometimes, you got to be able to be patient with those things as much as they may hurt in the moment."

Luckily for Richardson, Flacco knows part of his job is to help him develop, as he's seen a lot more days in the NFL.

Flacco took the starting job and ran with it last season with the Cleveland Browns, but that doesn't seem like it will be the case this year in Indianapolis, at least for now.