In a recent episode of Young Sheldon, Sheldon seeks help from his former mentor Dr. Sturgis to get his grant database project off the ground. This highlights a plot hole in The Big Bang Theory finale, where Sheldon fails to thank Dr. Sturgis for getting him into physics. The Young Sheldon showrunner explained that the shows weren't actively tied together at that time, but perhaps Young Sheldon can address this issue in future episodes.