I'd actually asked Gemini and it made a number of suggestions for somewhat similar movies that were
not
the one I had in mind.
Searching IMDb for "Savage Intruder" brings up a 1970 US horror movie (nope), and searching "Last Safari" brings up a number of things that don't sound exactly like my OP either. So… either this drama doesn't have an IMDb page, or the title was actually something completely different.
Some other scenes I vaguely recall: as the old explorer lay dying he tried to tell the younger couple how to use a navigational instrument, but the woman found the lens had cracked. There was also a scene where two tribesmen were spying on their camp, apparently hoping to see the couple making love, but they didn't on that occasion. One of the tribesman said something like (subtitled) "Hmm, no nookie tonight". Also, the tribesmen carried their water in a plastic softdrink bottle, which looked out of place.

for future reference, chat GPT will give you a quicker answer. I copied and pasted your op into it and it came back with results in 6 seconds.

My password is password.

The Last Safari (also released as The Savage Intruder) — 1977/1980s TV movie

Orson u are as dumb as a box of rocks.
The only poster who had his account banned 4 times without ever breaking any rules each of those times.

He wanted the name Steve, you ****ing retard.

Here in the States it came on after Friends and Seinfeld.
It was part of NBC's must see TV
The only poster who had his account banned 4 times without ever breaking any rules each of those times.