The oil pressure/temp problem was due to the location of the leak and the cooling effect of the leaking cold fuel.
As a ground theory instructor, the first thing I thought of when I heard that was "It sounds like the fuel leak is cooling the oil" If it is a full flow system, then raising the viscosity of the oil will raise the oil pressure.
Maybe the 2 things, apparent low fuel level and low oil temperature should have started a thought process, but of course it will be dependent on systems knowledge, not flying skills.
No one in the program came up with the 'obvious' (to me) relationship.
Hopefully, you professional pilots here will have your memories jogged if something similar happens to you.
Automation dependency is one of the reasons Human Factors training is so important nowadays.
As was said in the program by one of the passengers "Do I think the pilot was a hero?, no. Do I think he was a bloody good pilot?, yes." ......and I would agree, if only on the unpowered landing skills.