Yes that winter BG attempt was parky. Glad your o.k. Sleeping That long proves you went through a real ordeal.
My only brush with that was when I ran / walked ( with 2 friends) down Glen Nevis from The top car park, in the rain then ascended Sgurr Elide Mor to do the Mamores back to Glen Nevis top car park. It snowed and was blowing 30 mph on Binnean Beag and Binnean Mor, we had to retreat off down to Mamore lodge and go back via the WHW route. I was shivering whilst running on the WHW track, never felt so cold before or since. We decided to climb the col between Stob ban and the Mullach to get back to the car, and that was like torture. I don't think I was as bad as you, but I was approaching it.