When Leonard informed Charlton of the invitation for lunch from the duke and duchess, he was already about to ride his carriage to meet with his friends who just arrived from Alighieri. However, since they were his beloved's parents, he took it upon himself to change his schedule to accommodate them no matter how abrupt. Kylo already went ahead of him and so, he asked his coachman to go ahead and inform them that something important came up.
"No need to change your plans, even Geoffrey politely declined my mother's invitation."
"I must insist. We have been friends for a long time, and I have not even had the chance to meet your parents."
"I haven't met yours either if that makes you feel any better."
"Please wait for a while, I need to change my clothes. I'll ride with you in your carriage."