Variation happens. My husband (x, but not, y'know, scorned) is a writer. Most of our years together had me at work and, some years, school after work some days of the week. In those time, he was home writing and was the cook then. He's a much better natural cook than I could ever hope to be, used to orchestrate - not all the time, but once in a while - a meal around some culinary theme. Must have been the reaction to his family's horrid cooking...). Alternately, I was the main cook for more or less years at a time, and we also often cooked together, one helping the other get stuff to the table for wider family or guests. In those years, I also went through the 7, a call, 8, a call, 9, and arrival home at ten.. There was this tendency to be optimistic re rehearsal timing.
So... I'm not subscribing to any one pattern..
but I am wary of people in a house working their way into isolated space territories except for the odd raging arguments or intimate engagements..
not good in the long run (my opinion).