That sounds like perhaps instructions for a rotary and different chemistry. I'm not using a rotary. I usually buy Tetenal press kits which prescribe in fact 39C for 3.5M.

Could you please humor me and explain to me why it's not good practice to rinse between developer and bleach? (especially if the rinse temperature is near developer and blix temperatures)? Both developer and blix can be reused repeatedly. It occurs to me rinsing after the developer ensures less/little developer is introduced into the blix when it is stored. I have been doing it this way for many years with no ill effects. But I'm always looking to learn a thing or two! (or ten!)

Relatively recent example using my above mentioned process: