Confused?
Could someone at London ATCC please answer this query. We were departing from one of the "London" airports, and on handover at 1500' we got a clearance "passing 4000' turn right heading x degrees, climb FL70." Unfortunately the transmission was a little distorted and to be quite frank I was a little confused, and my brain registered an altitude and flight level in the same transmission so I queried it. This all happened as we were trying to accelerate and retract flaps. Is this normal practice? To me there are possible reasons for my confusion:
1) I am a dimwit - not an unreasonable assumption!
2) The controller made a slip - unlikely, but well who hasn't.
3) The phraseology is allowed, but is a potential flight safety issue.
The reason I bring it up is that if 3) is true then it is time to change it.
I do not want to give away details of whereabouts/freqs because I have the highest regard for UK ATC.