We are sending Each user through per user named credentials OAuth Flow programatically one 1st login, Can we intercept this flow send some additional params here ?

We are sending Each user through per user named credentials OAuth Flow programatically one 1st login, Can we intercept this flow send some additional params here ?

We are using custom Auth Plug in class and in this URL navigation to authenticate against per user principle authentication is happening without issue but in the next api calls we are getting 403 from our Backend as this api call is happening with the access token of OAuth User Flow hence apogee is not allowing to go through ,

The expectations is either we should send few other params to OAuth User Flow so user gets correct Access token to use in next actual call

Or In the next api call on 403 we should force access token to expire in apex ,

This is possible ,

Any help would greatly appreciate.