Question answered, and not for the first time. But just in case you missed it, no, ATC don't know the specific procedures for each airline...or aircraft...or engine. Or for any of a multitude of other things where a standard procedure cannot be followed for some reason. Yes, some of the options that may be followed by a crew might surprise the odd controller but tell ATC what you need to do and the controller will sort it all out - that's what they're there for and paid for.