I think Lewis tried to see if a seat was available at RB, is more likely.
RB wouldn't want two tp level drivers to have to manage; it doesn't suit their ethos. Teams have often done better with one dominant driver. Perez just hasnt' been on it this season, is all.
I agree, everything points to it that it was Lewis's people making first contact. And understandbly so in my opinion. I mean he was until recently memory a winning driver, and even this year in that pos that the w14 is he performed admirably. I can totally understand he would want to win again, and with Mercedes that just isn't going to happen.
However I do think Mercedes are crazy still paying 55m for Lewis, he is good but his performance isn't that good. That is more than what Max is on. So 100m for two drivers, that is way too much for Red Bull. Based on his reputation as a racer, and the controversy by his stance's and behaviours, I would currently value him at 10M but realise that you'd have to pay say 20M to get him in a winning car. But Red Bull is his only option if he wants to win unfortunately for him, and that is not going to happen.
Thing is, who would be capable of even getting close to Max? The reality is that the RB is such an exact tool, that only someone like Max could get the most out of it. This is partly why Checo has struggled so much this season. Hamilton would struggle just as much, possibly more, as he isn't as adaptable to a car if it doesn't suit him 100%. Alonso might be good, he can get the most out of a car, but few drivers would be capable of driving that RB to its limit.
I don't wholly agree with you on that point; yes, Alonso could. But I do think Lewis could as well, he knows how to race, and he also knows how to communicate with the car. Whether he knows after being so long with Mercedes how to communicate with a Red Bull team, that remains to be seen.
Personally, I would have loved it if they became teammates, I think it would drive Max to even bigger heights. However unless Lewis is willing to reduce his salary demands and proof that he can do it, I can't see it happening.