about transparent mode
the firewall will be considered like a layer two device
the interfaces will have no IP address
so how the 6500 gonna know where they are and to which ip address it gonna send the packet???
so reasoably not posible
in addetion to that
the name transparent imply it will be not seen by the network devices so u can have the firewall in transparent mode between to devices that are in the same ip network
and about the second question not clear to me
if u clearifiy it more will be better
hope this helpful