Yes, but it was only a very brief moment!
By the way, do we have an idea where this video was taken?
I mean, the video from that twitter account is also very brief, and technically the J-20 and GJ-11 in that video are not actually in the video frame together at the same time. We don't actually know how much time elapsed between the J-20 approaching for landing and the GJ-11 approaching for landing.

