It happens regularly, if infrequently in Europe - mainly in - guess------
Spain.
Particularly in my experience Northbound into French airspace but even on an intercept heading to ILS at BCN. Oh yes. More than once too!
All agencies can do this, esp when busy but an alert crew will soon realise and a quick radio check call bumps them back into action. The intensity of work in N Europe on some sectors makes this sort of thing inevitable but there are three people in the loop and others waiting for your handover who will make calls if it doesn't come so ist is self limiting. Just one of those things and a late handover or late descent is hardly a major event.
Just what the Spanish excuse is I cannot imagine.
