I have a situation where I have sharepoint 2013 on a certain domain name and have installed sharepoint 2016, but would like to use the same domain name for that as well. I'm not sure if it is possible to have 2 certificates with the same subdomain but different port numbers ?
https://sharepoint.xyz.com:3001/ = sharepoint 2016
https://sharepoint.xyz.com:4001/ = sharepoint 2016
Its a bit of an odd query, however I'm not ready to turn off sharepoint 2013 yet for multiple reasons