iSCSI: Initiator Task Tag Question

["McGowen, Mike" <Mike.Mcgowen@compaq.com>]

Section 9.2.1.7 of the iSCSI spec states that SCSI may use the initiator
task tag as part of the SCSI task identifier.  Both SAM (Object
Definition 7: Task) and SAM-2 (subclause 4.9.2) state that a task tag
may be up to 64 bits.  Yet the iSCSI initiator task tag is only 32-bits.
Is there a disconnect between iSCSI and SAM-2?

Mike