I have heard mixed reports so did not want to make a definitive statement. As, status or another card can provide access. folks are sometime unclear if it is the Gateway card. Also, the earlier no fee card, did not offer XN access. Hence the request for report to help pin this down.

Update

More discussion in Chase United TravelBank Card becoming non-cashback Chase MP Gateway Card 21 Sept 2020

In United Gateway Card | MileagePlus Credit Card | 20K Bonus Miles (theexplorercard.com) at one time it did state there was expanded availability in the Blackout section but that statement is now gone. However a 2021 post says they still have access to XN.

Any more recent reports?