He might feel watched at some point, or simply hear a soft meow as Kitty stretches before shifting a bit.

There's a black kitten on the wall behind the bench that he is sitting on, watching him lazily. She might or may not have tried to catch glimpses at the screen of his phone (she most definitely did), but as soon as he looks at her she is just the most bored kitten in the world. Nothing to see here, nope.