The Polish international completed his blockbuster move to Barcelona two weeks ago after the Spanish giants agreed a £40million transfer fee.
Lewandowski has since spoken about his departure and revealed his exit had nothing to do with Bayern's interest in Haaland.
The Norwegian ended up leaving Borussia Dortmund for Manchester City earlier this summer, but several top clubs were said to be considering a move for the forward.
"No, that (departure) was nothing to do with Erling," Lewandowski told ESPN. "I am the guy who even if something's not good for me - truth is more important.
"I don't want to speak about what happened exactly. But if the question is if the decision to move was because of him, no, I didn't see the problem if he joined Bayern Munich.
"But some kind of people doesn't say to me the truth, say something different." He added. "And for me it was always important to be clear, to stay true, and maybe for a few people that was the problem.
"And in the end I know that something doesn't work well with my person as well and I knew that, OK I see and I feel that maybe it's a good time to move out of Bayern Munich and join Barcelona.
"I had a very good relationship with my teammates, with the staff, with the coach, and these are all things I'm going to miss because I spent a beautiful time there. And we were not only friends from the pitch but also something more.
"But in the end this chapter is over and I open a new chapter in my life and a new chapter in my career."
Robert Lewandowski could make his competitive debut for Barcelona against Rayo Vallecano when the club's La Liga campaign gets underway on August 13.