I would start with the same method I would use to teach them not to door dash. You're just upsizing with the gate. Here's a video from Zak George breaking it down. There's a lot of fluff at the beginning of the video, but keep watching, it eventually gets to the substance. It's even got a bunch of random cats as the distraction.
Small steps are the key. You're not going to overload the dog with too much stimulation all at once.
Small steps are the key. You're not going to overload the dog with too much stimulation all at once.