I did that myself. Actually did like 4-5 hours of calls in total like that with one company. I have zero bad feelings and the interviewers were cool about it.

I did that myself. Actually did like 4-5 hours of calls in total like that with one company. I have zero bad feelings and the interviewers were cool about it. I just can't afford to take 4-5 days off each time someone thinks we might be a good match and needs a 30 minutes (which is always more). When I'm motivated to switch jobs I might talk to a few companies and all interactions are kind of short and in the middle of day. They seldom want to meet at 7 am or at 6 pm. Middle of the day? Sure, but we both understand it means finding a middle ground.