Few I can recollect : 1) With a guy friend in college. Some calls have lasted from mid night to next day early morning. 2) My husband . Then my fiance . Here I think calls have lasted from previous night to next day early morning. This made me see the recent call history with him and the max is 48s . With few being 39s ,16s. Not crossed a minute anytime in the recent past. 3) One bestie in the US. They used to last for 1hr + . After her kid frequency kinda reduced . But if we speak it's at least for an hour. 4) With sister (staying in Same city.) All work like cooking,cleaning , using washroom (not taking bath though) happens during video calling her . Don't know what I talk with "once upon a time my enemy".