The theater near me hosting this event lists the length as 150 minutes:
![](https://www.avpgalaxy.net/forum/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FkT5WnPp.png&hash=8a5acb8780719c54fba23d20ec2d8250067ab216)
They inform the session includes "an exclusive clip from
Alien: Covenant" and a "visit to the set through the eyes of director Ridley Scott". Now,
Alien is 117 minutes long, so, assuming both of these features are more or less the same length, we could expect about 10-15 minutes of footage?