My question is whether a hold entry manoeuvre, eg flying a teardrop or parallel entry to then be established on the inbound track towards the beacon satisfies "enter the holding", or whether it is required to complete the entry, and then actually go once around the hold, before commencing the outbound leg of the reversal procedure.
It's not necessary to fly another circuit once the entry into the alignment hold has been completed.
Think about it -- once you're headed back to the fix following the entry, aren't you established in the "direct" sector?