First relevant part:

Texans coach DeMeco Ryans said Monday he will submit some calls from Sunday’s 24-21 loss to the Jaguars to the NFL for review.

“We’ll let the league handle that from that perspective,” Ryans said about questionable calls from the game.

When asked what calls he would submit, Ryans said: “We’ll talk to the league about that.”

Second relevant part:

Ryans said with the way the game is officiated, it can make it difficult for guys in coverage.

"It makes it hard to cover guys,” Ryans said. “Some of the best athletes in the world are at the receiver position. It starts with getting pressure on the quarterback to speed him up, that helps with coverage, but it’s also about moving your feet and making sure you’re playing clean at the top of the routes.”

The rest of the article was listing 4 bad calls that either led to JAX scoring or negating a huge reception, and 1 bad call that was called in favor of the Texans.