Expand Synology DVA3221

Does any have experience or know of any literature saying you can expand the 32 camera count on a Synology DVA3221 by adding another DVA3221. I have a friendly job with 45 cameras and want to use the DVA.

I have not tested any of them, but NAS Compares has a review here

Thanks. I think I found the answer. Also, according to the synology rep the DVA can track people from one camera to the next. Now my new hang up is license plate recognition but I think I’m just gonna go for it and deploy it in a friendly customers large retail store. I’ll let you know how it goes!