Is there any way to duel mount vertically?

Hello,

I was wondering, whenever I shoot piece to camera interviews and want a wider and tighter shot on the subject but still maintain the same relative framing I have to get two tripods and push them together as close as possible. Or I use a horizontal duel mount bracket with the cameras side by side.

This always feels a bit off to me. So, I was thinking of trying by having the camera mounted atop one another. But, I cannot find a single bracket/mount that can do this.

What’s anyone’s thoughts on this? Is it just a bad idea?

Thanks