There's no problem with AF interlining your baggage to CO. Your baggage will be checked through to LAX.
Unfortunately, as the airside shuttle runs clockwise, 2B to 2A is the longest ride with stops at 2F2, (2E ?) and 2C before reaching 2A. Once you have cleared immigration in 2A, you need to walk 5-7mn to reach immigration in 2A.
In any case, 2 hours should be fine.
Enjoy your flights

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