New tack but same subject. check out the topic of RT discipline to save me writing it again.
For all of those concerened i still believe that we in ATC should never issue more than two instructions in the same transmission. i.e. level and speed or heading and speed, trying more is a recipe for disaster and leaves us all open for loads more cliches along the same lines. While on that one a freq change should come on it's own, just to make sure what would have been a wrong readback is not now on a different freq.
Keep smiling though