Wildcard Virtual Server question

A SNAT isn't a listener, and a virtual server won't be affected unless the client traffic matches its listening parameters. The general notion is that virtual servers are affected from most specific to least specific. For example, if you have two virtual servers, both wildcard (0.0.0.0/0), but one is listening on port 443 and the other on any port (0), port 443 client traffic will be answered by the more specific 443 VIP.