Finding top talkers for intra-zone traffic

I need to find the top talkers between a few interfaces that are in the same zone.  There are no policies since the "Block intra-zone traffic" is unchecked.  I see nothing in FortiView (I'm assuming since there isn't a policy), but I can see intra-zone connections in the CLI when I list the sessions.

Is there a good way to find the top talkers between these interfaces?  GUI is preferred, but CLI is fine too.

Thanks!