I'm not sure how it works for my situation. I've basically been bonded to my parrot for 6 months because she was at the pet store that I work at for that long. I wasn't even planning on getting her because of the time requirement and I just didn't feel fully ready for a commitment to a bird, but then I found out they'd be moving her to another store and I made a bit of an impulsive buy (it was 3 days, but still).
So really, for 6 months she's been used to me being "around" for 6 hours a day, not even every day, only 5 days a week- but I was working when I was there. I really only got to socialize with her for maybe 20 minutes tops while feeding/cleaning her cage. Now that she's home with me, I'm gone 6 hours a day, and spend from 2 pm to 8 pm with her. This is more hands on interaction, rather than just quick hellos as I pass by her cage at the store.
And when I said I spend "hours at a time" with her I more mean, I'm available to her for a 6 hour chunk of time. Most of that time she wants to spend on me which is fine. And I do believe I'll be available to her for at least 6 hours a day for the next 30 (maybe more!) years. I'm the type of person who pretty much needs an equal amount of work/school time and personal time. And I really like routine. Pretty good personality traits for a bird owner I think
Sorry to go SO off topic.