My comments are only for A320.
I'm not sure about it. Once I had the Y Elec Pump run continuously on ground, due to mis-alignment of the cargo door handle. After 20 minutes or so, we got Y Elec Pump overheat.
You don't have to be. There could be a different reason for your episode. Has your company put any restriction after your incident? ECAM is very sure about it. And when in G+Y fail with PTU INOP and yellow fluid available what are you going to do when ECAM tells you put it on? Ignore it? There is not a word about any time limit on Yellow pump use. Normally the PTU automatically does the job, and the conditions that forbid use of PTU also forbid the use of any pump. So unnecessarily a doubt has been created that's all.