SQL*Net TCP adapter, listening on multiple ports

I recently had a conversation with an Oracle rep that I would like to confirm. The rep claimed that a LISTENER would not listen to multiple ports on the same NIC. particularly, my LISTENER.ORA file looks in part like:

LISTENER =
   (ADDRESS_LIST =

      (ADDRESS=


         (PROTOCOL= IPC)


         (KEY= FM1)


      )
      (ADDRESS=


         (PROTOCOL= TCP)

         (Host= jumbo)


         (Port= 1521)


      )
      (ADDRESS=


         (PROTOCOL= TCP)

         (Host= jumbo)


         (Port= 1526)


      )

The Oracle Rep said that listing these two ports with the same Host= but different Port= will not work. Can anyone confirm this?

In a related note, he seemed to indicate that if I had two aliases for the same IP address, ie jumbo and jumbo2, I could use two ports, so long as the Host='s were different. This doesnt make much sense to me, but I thought Id ask around if anyone has any thoughts on this.

thanks in advance,
Dave
djd_at_bank2000.com

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They do not necessarily represent those of 
my employer, or even reality.