Problem with Oauth2/auth

I practice with the default login and consent app .
But,after I get the access token,then,I revisit the oauth2/auth with the first time get paras,it still need to jump to login and consent ,not just return a callback uri with code .
So,what is wrong

You need to remember the login and consent. There is a checkbox.

I not mean to skip login UI or consent UI.
I just mean is it possible to let oauth2/auth which in the initial flow directly return http://xxxx/callback?+code like the request oauth2/auth made after consent accept .
That is if user now have been authenticated,then he get request to oauth2/auth?xxx which directly return callback+code.
IF YOU JUST REMEMBER ,only skip the UI but not skip send the get request http://login-provider?login_challenge=xxxx