@JeremyECrawford 9th lvl Gate spell: Does the summoned creature remain when concentration ceases? Does this mean it can be trapped before it leaves? Asked many other DM's and got many diff answers.

— Malkym Lesdrae (@MalkymLesdrae) April 23, 2018

The duration of the gate spell applies only to the portal it creates. #DnD https://t.co/TXRy8pXX1T

— Jeremy Crawford (@JeremyECrawford) April 23, 2018