Oh what fun!

Were you going up or down?

We learned to chill out years ago when holidaying down country lanes. We have followed traction engines, very old classic cars, combine harvesters, tractor carrying a pig in a bucket, horse drawn gypsy vans, in fact all sorts of things. 
I would hope that the VW camper ( not exactly sure what you mean, probably a classic Vdub?) would be up to towing the twin axle, but give it some space to the top (or bottom) of the hill. As for stuff behind me, couldn’t care less really, they do as they want, hopefully as safe as possible. (You said face to face, so did you pass the VW going the other way, or did you mean you caught it up on the hill, sorry I am a bit unclear🤔) If it’s going the same way as me, at some point I would hope it would pull over, but they don’t always. 

Away from the motorways, Summer is usually very busy, but we much prefer quieter routes than zipping along boring motorways. The pig in the bucket was hilarious, totally chilled out, thoroughly enjoying it’s ride out😁 

Perhaps if I was in my car intent on arriving at a destination on time, I would become a bit agitated but still wait for a good opportunity to pass even if it meant crawling up the hill behind it. In my heavy slow motorhome out ambling along touring with plenty of time on my hands, I care not a jot.

peedee

Stop and access the situation then many head’s will work it out 

Ah slightly different to what I imagined, it is a problem I have encountered before on the old road to Malaig from Fort William. In my case the oncoming caravan outfit refused to reverse or couldn't and I had to unhook my tow car and reverse into what space I could find as two separate vehicles. The bus behind me and the rest of the convoy was not best pleased. These days if towing my car I try to avoid such roads or travel solo so that I have the manoeuvre ability.

peedee

Whatever you did it must have taken a while as there was time to establish the make and model of the caravan, work out the details of the VW camper and check all the vehicles following you 😀

Maybe you are still stuck at 50°50'34.3"N 2°40'43.6"W