As the Roy children argued for 5 minutes over which of them should take control of the company while their father was incapacitated, the clock on the wall of the hospital waiting room never moved from 3:26.
When Shiv and Roman enter the auditorium, Roman sits down awkwardly on the chair and the back collapses. In the next shot he is crouching and goes to sit down again on the backrest. The scene is edited poorly and Roman effectively sits down twice.
Logan loses consciousness and to make a diagnosis a CT scan is made. The doctor later comes to explain that there is a deeply situated hemorrhage of the brain and that operation is not an option.
However, the CT scan that is briefly shown shows no hemorrhage but quite a normal brain. This does not rule out an ischemic event (brain infarction) because in ischemia changes in the CT scan usually appear after a few days as a dark area. An ischemic event is usually not accompanied by loss of consciousness.
Shiv puts $20 in a vending machine to get a soda. In general vending machines won't accept bills above $5.