Unable to automatically join invite-only channels on libera: a delay command would help

[n-kalosha]

I want to auto-join an invite-only channel on libera.chat . In order to do this, I need to identify to the nickserv (I do that through SASL), then /msg ChanServ invite #channel , then /join #channel. If I put these commands into on_connect, the join command gets executed too quickly and I'm rejected from joining the channel. It would help if I could add a small delay between the two commands.