How can i notify users about channel Renegotiation when using 2FA

[khodorb]

HI ,

is there is a way to inform a user in advance that his connection is undergoing a negotiation in next few minutes while using 2FA , in this case the user can save his work,
i am using 2FA with radius and i want to limit the connection time for "n" hour , but at the same time i want users to be notififed about the expiry of their session when it is close to the end of "n"

any help is much appreciated