As I understand it, the 5 link off the new burgundy BB41 won’t fit the BB GMT / BB chrono / old BB41 diver.
However, it appears the 5 link from the new BB41 smooth bezel (M79680) does fit the BB chrono (and therefore the BB GMT etc).
T-fit clasp makes it a very attractive option!
Info from @pandlwatchcollection on instragram.