There's my stab at it. He's focusing on going mad from isolation, Atsurou is focused on the fact that he's talking to a shoe.
If we don't talk to others, then we'll end up the same!!Wait, haven't you completely misunderstood the situation!?Come on, respond.
Come on, respond.Hey, look. Honda-san thinks that sandal is a mobile phone.Eh---
Even Honda-san had finally snapped?Tch...
As expected, it couldn't go through, huh.