The elder Shanahan spoke with reporters after Saturday's practice and briefly discussed what last season's study sessions with 49ers quarterback Jimmy Garoppolo were like.
Garoppolo, as you likely know, was recovering from an ACL injury suffered early in the season. Kyle Shanahan felt it might be more beneficial for the quarterback to spend time with his father studying NFL film rather than have him sit in game-planning meetings when he wasn't going to play.
Garoppolo reportedly spent up to 15 hours a week studying film with Mike Shanahan, who coached the Broncos to three Super Bowl championships and won another as the offensive coordinator with the 49ers.
You can listen to Shanahan's comments about his study time with Garoppolo below, courtesy of Cam Inman of Bay Area News Group.