Check Hatsune's phone out! It should've been in the car!
There was a burnt phone there,
but even if the data could be recovered, there wouldn't be records of what sort of conversation you had...
But if that deduction is right, shouldn't his disguise have been found in the toilet?
It was cut up and flushed into the toilet.
A knit cap would go down easily, and if he used a thin nylon windbreaker,
it could be cut into small pieces.
What about the shoes?