Apache SSL works but the config shows it's only listening on 80 not 443, how is it possible?

Server: CentOS 6, Apache 2.2 and OpenVPN installed.

The httpd.conf has:

#Listen 443
Listen 80

Websites work in https so I think OpenVPN might be listening on 443 and forwarding to Apache (port-share), but I can't find this config. Also, if this were the case, Apache should be listening on a second port to accept the forwarded requests, shouldn't it?

I have searched all config includes and there are no other Listen directives. I've also restarted Apache.

If I try to see what process listens on 443:

# lsof -i tcp:443

COMMAND  PID   USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
httpd   1635   root    6u  IPv6 352710      0t0  TCP *:https (LISTEN)
httpd   1259 apache    6u  IPv6 352710      0t0  TCP *:https (LISTEN)
httpd   2286 apache    6u  IPv6 352710      0t0  TCP *:https (LISTEN)

The last two lines are repeated about 20 times but with different PIDs.

Also tried:

# netstat -tulpn

tcp     0    0 :::443     :::*    LISTEN  1635/httpd

The above all seem to show that Apache is the one listening. I have verified that I'm working with the correct httpd.conf.

If I uncomment the #Listen 443 and restart Apache, I get an error that the port is already in use.

Also, I have tried commenting out one of the SSL vhosts to see if the site went down, and it did, so I know this is the correct Apache (rules out a separate Apache install I think).

The only thing I can find in OpenVPN's as.conf is this:

# web server will use three consecutive ports starting at this
# address, for use with the OpenVPN port share feature
cs.dynamic_port_base=870

How can I find out what's listening on 443 so I can stop it and have Apache listen normally?