Three hours maybe, one hour is too few. If I wanted a senior devs opinions, leaving them days to ponder and consider their responses is also valuable, so three

Three hours maybe, one hour is too few. If I wanted a senior devs opinions, leaving them days to ponder and consider their responses is also valuable, so three hours every few days is much more valuable than one hour a day. The problem with one hour a day is like having a washing machine once a month: It's useful, but you still need to rely on the workhouse alternative for 3/4 weeks, and it saves you time, but might add more mental burden or risk, making it risky to do.