I haven't seen the doc, but I will watch. I appreciate that you say it still takes time to process your goodbyes to Roger. I get that. This has been a long era of greats, with committed fans, and it takes time to let go. I had a friend (not on these forums) say to me today that I was a diehard Alcaraz fan. I told her, no, I'm a diehard Rafa fan, and I like Alcaraz. There's a difference, and Rafa is technically not done.
I do believe that Roger and Rafa have come to a special understanding and friendship. They had 6 solid years as 1 and 2 in the world, when their every meeting was an event. (And, obviously, only a final.) Their contrasts made the rivalry great, and they had some epic matches. (By which i don't mean just long.)
You mention, in retrospect, how close Rafa was to retirement when he played doubles with Roger at the Laver Cup, 2 years ago, for Roger's retirement match. I said at the time that Rafa cried for the end of his great rival's career, of course, and clearly that was an ending for him, too. Of their rivalry, but also, clearly he knew he was staring at his own tennis mortality. I think he was crying for that, too. That takes nothing away from the sentimentality of the moment, which was lovely. It was the end of something big in tennis, and what it meant to them, in part, only they can know. At a certain altitude, greats only have each other to share it with.