Does anyone know what the time durations in this artist's titles indicate? For example, this is (0:40+0:30+1:20).

I want to say it could be minutes spent on doing certain parts of the picture, like lineart and coloring.

Tapper said:

I want to say it could be minutes spent on doing certain parts of the picture, like lineart and coloring.

Agree. 40 minutes sketching. 30 minutes doing line art. 1 hour and 20 minutes CG.