[Victor74]

You can disagree but there are too few officials on the roster to not work with another crew chief in the regular season, or some crew chiefs wouldn't get as many games scheduled. The top tier crew chiefs won't work with each other (Finals worthy, so a crew won't consist of Joe Crawford and Monty McCutchen in the regular season).

You will however see a veteran crew chief have another lesser experienced crew chief working the game (example of Dan Crawford and Rodney Mott).

Just two examples at random

02/01/12 Toronto at Boston: James Capers, David Jones and Courtney Kirkland

Better example:

02/01/12 Oklahoma City at Dallas: Ron Garretson, Michael Smith, Mark Ayotte

When an official is moved up to be a crew chief, they spend a good part of that year split between being a crew chief and serving under a strong, veteran crew chief.

And it isn't as common to have two crew chiefs on a crew during the regular season as a crew with only one crew chief. But it will happen and more times than can be considered rare. Again, top tier crew cheifs won't be on the same crews. And a new trend that seems to have emerged recently is when an official is set to retire, they go on a farewell type tour and do indeed work with each other. Happened to Joe Forte and this last year Dick Bavetta worked on crews in the regular season with officials he hasn't worked on a crew with for a while during regular season games. If you have followed Bavetta's crews the last couple seasons, he generally is the only crew chief on or had a lesser experienced crew chief working with him on the crew. Last year, he worked with virtually every official. Could also just be a huge coincidence.