NFL announcer Ian Eagle -- who called the Chiefs game Sunday -- snuck in a Swift reference after TK scored his first touchdown of the season against the Jags. It was a simple toss from Mahomes into the end zone ... but a big deal since Trav missed last week's opener.

As Travis and his teammates were celebrating ... Eagle said, "Kelce finds a blank space for the score!" His broadcasting partner didn't say anything, but everyone picked up on it.

Even right after this, Eagle kept it going ... saying Kelce was able to shake it off considering he didn't play last week following an injury. So, yeah, everyone's still giddy about the news.

ICYMI ... word of Travis and Taylor possibly dating first started to percolate earlier this week after The Messenger reported they've been seeing each other lately. Other outlets confirmed they're spending time together ... but stopped short of saying they're full-blown dating.

Based on what Travis's bro had to say about it on TNF ... sounds like they're just banging.

Remember, back in July ... Travis revealed he tried shooting his shot with Taylor during one of her concerts -- but apparently got denied at the time. Since sharing this story, however, it sounds like TS got in touch and then some -- which just goes to show, manifesting is real!

If Taylor and Trav are, in fact, keeping it casual ... that lines up with how she handled the Matty Healy fling earlier this year. TayTay's obviously doing her thing post-Joe Alwyn.