The Time Lord simply nodded - he would, if Sam was genuinely interested that is. Not everyone was interested in the technical side of time travel - though, they always seemed to want to know why his box was bigger on the inside and that was quite full of technical jabber as well.
"Well, I can see how it can sound a bit odd..." Well, actually he couldn't; but, he liked to think it would sound as off as eating a pear out of enjoyment - something possible, but oh so wrong.
"Get some rest," the Doctor pressed as he slouched in his spot getting into a comfortable thinking pose. He needed to let his mind wander a while.