Hot re-fuelling happens onshore as well! Gravity re-fuels being a problem. The guy on the nozzle is watching for a signal from the pilot and for tell-tale signs the tank is almost full, very difficulty when the pilot wants to top-up.
Suggest hot gravity re-fuels to top-up e.g 332 should be stopped. Been many occasions when a lack of concentration causes an over fuelling or indeed a small spill (cupfull).