I have done both over the past 3 decades. in the office the most I worked productively ever is maybe 3.5/4hrs. at home it is not uncommon I hit 9-10hrs of straight up work. just about everyone I know feels the same way. my at-office day is like:

- drive 20 minutes

- get in, hit the breakroom, coffee and chat for 20-30 minutes

- work a bit, maybe a meeting

- IM bunch of people about lunch plans

- go to lunch for 90 minutes

- back at the office, another 15-20 minutes before settling in

- work a bit while keeping an eye on traffic to head home

- head home

At home,

- get up and work for about 90 minutes

- bike to school with my kid.

- work for 6-ish hours

- pick up my kid

- work another 90 minutes while she is doing school work

- parenting fun

- work another 60-90 after her bedtime

the core difference between at-office and at-home is that when I have to go to the office I do not touch my computer at home ever (often won’t even take it home with me) while when I am at home I will frequently work late at night etc