When I was a contractor I also preferred hours. If you get paid by results there is less reluctance to wasting your time. I had several situations where I told

When I was a contractor I also preferred hours. If you get paid by results there is less reluctance to wasting your time. I had several situations where I told a client “you understand that you are paying me good money for sitting around and waiting for X to make a decision?”. Sometimes they were ok with it and sometimes they would accelerate things. But at least I got paid. On the other hand I did fixed price where they didn’t respond to questions which wasted my time (and money).