It seems that the delay on part of the Immortals squad was not limited to the finals. They were also late for the semifinals wherein they were to face off against CLG.
Gotten information subsequent to my video that IMT players were almost forfeited in the series vs. CLG from 10am the same day.
— Thorin (@Thorin) September 12, 2017
This tweet by Thoorin seems to suggest the same. The players are rumored to have been partying the night before and this resulted in their delay in reporting on time.