Either answering or not answering is going to blow Ten's brain in some manner. Telling him would just make the implosion worse. Right now, Ten is going through his memories and counting each of his lives up though his own and then - he becomes someone else. And then - Granddad here. Doesn't add up.

Just doesn't add up.

The shock and confusion does not leave his face and picks up his suitcase and proceeds to leave. If the other doesn't stop Ten, Ten will wave with his fingers with his back towards Granddad.

Still very confused.