'vacate and contact ground' = 'vacate, and then contact ground...preferably within stopping distance of the next intersection/aircraft'....otherwise it'd be 'contact ground and vacate.. ' :ok:

This is why ATC fams (and the other way around) are/were vital. Runway exiting/ direction of turnoff planning is considered long before landing. Just as KDEN this time of year, I'm rolling further and generally exiting slower to avoid betting all the directional control on two small nose wheels as I go from a known friction to an unknown of the taxiway. Just the same in KPHX (35-40C) in August I'm rolling further with a lower setting to avoid toasting the brakes and delaying the next departure due to hot brakes.

Hempy, using the AIP format c:

a. CONTACT (unit call-sign) (frequency..."
b.* (frequency)
c. AT (or OVER) (time or place)
CONTACT (unit call-sign) (frequency...)

Tower uses "WHEN VACATED CONTACT GROUND..."

On the broader point of when to pass the instruction, when the aircraft has commenced the turn or is very slow and approaching the exit taxiway. When the aircraft leaves tower frequency after that is not of great importance. The debate has ignored the fact that runway separation standards do not permit another landing or takeoff until the landing has vacated and is taxiing away. A visual check of the runway is required before all landing and takeoff clearances. In reduced visibility, extra reports or Surface Movement Guidance systems are used.

Once the Aerodrome Controller passes the transfer, he/she has decided that the aircraft is no longer required in frequency.

fuji, I was being more generic in my thinking than any specific regional reference. Using the logic of the OP's original 'phraseology', it stands to reason that a. the ADC hasn't given the instruction until he's happy, and b. the pilot WILL vacate FIRST and contact SECOND (whether this is at the holding point markers or on the twy itself is irrelevant to the argument, as long as he's 'vacated').

My comment about 'contact and vacate' was facetious, and honestly it answers the OP's question....if the ADC wants you to stay on the Rwy and be on the SMC freq (???) at the same time, surely the phraseology would reflect that wish (i.e contact and them...)