HVLP?

can you just use a bigger tank for extended spray times? I saw a guy that daisy chained 4 old propane tanks to his compressor. Not sure what he achieved by doing this but I bet he got maybe some more spray time..but the same longer run time too. I could see mounting car tires.....
I had an extra tank connected for many years. Extra run time and would trap moisture too.
Compressor runs longer, and in the end its all relevant to the amount of air used.