A strange episode of MacGyver (TV)

I'm with my in-laws this week, and they like their classic television. One of the shows they've added to their "rotation"1 is MacGyver, the classic 1985 TV series2 starring Richard Dean Anderson, created by Lee David Zlotoff and Henry Winkler3. You might be familiar with the term "MacGyvering something" but maybe you didn't know it came from this TV show. The premise: Angus MacGyver's main asset is his practical application of scientific knowledge and inventive use of common items—along with his ever-present Swiss Army knife and duct tape and the usual coincidence of being locked up in a room full of useful materials I was busy helping prepare our fish dinner (caught fresh by my wife and sister-in-law!), so I missed the start of the episode and walked into the room in media res. MacGyver is surrounded by mideivel knights after saving Sir Galahad from being killed. I'm familiar with the general premise of MacGyver, so I was confused why he was suddenly a time traveller. Was he suddenly…