"I don't like a lot of things they do. They interfere basically with a lot of the cricket decisions over the period of time and I don't necessarily agree with that.
"It's none of my business. At the end of the day, I do what I do, I go out and do it to the best I know how.
"But it's probably just draining and the one thing I've lived my cricket life with is a major passion for the game."
Asked whether Howard - a former rugby player, coach and high performance boss - was the interfering CA staffer he was specifically talking about, Rixon said: "Let me say, I hope he was a good rugby player."
However, Rixon said Lehmann and captain Michael Clarke were well-placed to run their own ship and ignore outside voices.
"With Michael now being very content with where he is, Boof's obviously come in with a stronger approach to that," he said.
"That's why I think cricket's in a very good shape with Australia.
"Darren will eventually get a team around him that he's very, very comfortable with and that's fine. That's the way life is, that's the way it is with coaching."
The 59-year-old will again work with the Chennai Super Kings and hopes to pick up a gig with other T20 teams down the track, including in the Big Bash League.
Rixon said Australia should follow the lead of other countries and make national T20 coach a separate job.
"T20 should be a different identity to the other two brands of cricket. It makes sense."
- AAP
