I would definitely not do it. KLM departs from the new TBIT extension. That alone is a minimum 15 minute walk from where the bus from T2 drops you off at. If you're lucky enough that your flight actually has a gate at T2, add another 15 minutes to walk to the transfer bus, hope there isn't a long line, and take the bus over to TBIT...and if you do actually make it before the gate closes, prepare to be stopped by customs agents while they interrogate you on why are you sweating profusely before walking on the plane...