What happened: Kyle Shanahan spoke Saturday as preparations continued for the Broncos matchup. The availability came with San Francisco taking an unbeaten start into its next game.

Why it matters: The Broncos game matters because San Francisco is 3-0 despite injuries across the roster. It also arrives with Shanahan in the first season after his offseason extension and Denver still under scrutiny over its play-calling setup.

What to watch: The next development to watch is whether any late-week injury or lineup updates emerge before kickoff. Denver's approach after its recent play-calling change remains another key thread.