Is there a way to sync radio broadcast to tv??

This would only be possible if you had both streams per-recorded & were savvy with video editing software.

Live, not possible.

ETA: you could get it in the ballpark using the method poster above shared, but the way streaming tv goes you may have to do that more than once throughout the game.

Use the lsu sports app, stream it over your sound bar Bluetooth or another speaker. Works great. I finally got fed up with the announcers last night, I honestly may never go back unless it's Lynn and Ben. You can even hear the crowd much more.

I've been thinking about writing an app for this. There would be a huge market for it.