Hi !

I've found difficulty in understanding the following sentence from The Great Gatsby : ' He didn't say any more, but we've been unusually communicative in a reserved way'.
I'm confused about what Gatsby meaned. Does he mean that when his father and he communicate, it's in a reserved way which it's unusual because they're father and son ? Or does he mean that when they talk it's unexpected and they proceed in a reserved way ?

Thank you in advance.