tmnxVdoSGSplicePriorSessionId 1.3.6.1.4.1.6527.3.1.2.61.1.16.1.9

The value of tmnxVdoSGSplicePriorSessionId indicates the prior session id of the ad. If the value of this object is not equal to 0xFFFFFFFF, then this splice is a back-to-back ad insertion.