A recent discussion about Close Encounters prompted a memory from the 1980's.
An episode of The Fall Guy where Colt was investigating some place where they were faking alien spaceships to keep locals away (a very Scooby-Doo yarn!)
At the resolution when the bad guys were arrested Colt was asking how they'd rigged one particular incident where he'd been stopped by a spaceship, glowing light up above him, dead ignition etc.
Blank looks....it turned out (in The Fall Guy script) that he'd had a genuine close encounter at that point.
I've googled for 'Fall Guy Close Encounter' and 'Lee Majors meets alien' but no luck.