Mobile Viewing
Casting To Airplay
Download the Google Slides App
Open The Video
Go To The Three Dots In The Top Right
Open In New Window
Go To The Three Dots In The Bottom Middle
More
Open In Editor
Go To The Play Button At The Top Of The Slides App
Swipe Down From The Top Right Corner Of Your Device
Click The Button That Looks Like Two Rectangles
Choose Your Desired Device
Exit Out Of The Menu
Click Play To This Device/External Display
And The Show Will Play