Token not Refreshing .Net core

Questions
1

Given the following auth setup

  services.AddAuthentication(options =>
            {
              options.DefaultScheme = CookieAuthenticationDefaults.AuthenticationScheme;
              options.DefaultChallengeScheme = OpenIdConnectDefaults.AuthenticationScheme;
            })
            .AddCookie()
            .AddOpenIdConnect(options =>
            {
              options.SignInScheme = CookieAuthenticationDefaults.AuthenticationScheme;
              options.Authority = Configuration["OktaAuth:OktaDomain"] + "/oauth2/default";
              options.RequireHttpsMetadata = true;
              options.ClientId = Configuration["OktaAuth:OktaClientId"];
              options.ClientSecret = Configuration["OktaAuth:OktaClientSecret"];
              options.ResponseType = OpenIdConnectResponseType.Code;
              options.GetClaimsFromUserInfoEndpoint = true;
              options.Scope.Add("openid");
              options.Scope.Add("profile");
              options.Scope.Add("email");
              options.SaveTokens = true;
              options.TokenValidationParameters = new TokenValidationParameters
              {
                NameClaimType = "name",
                RoleClaimType = "groups",
                ValidateIssuer = true
              };
            });

And with refresh token enabled, and grace period set to 30 seconds.

I’m unsure as to how to make my okta token actually refresh, as when I remove myself from the application after the initial login, I seem to stay authenticated for a REALLY long time.

The okta middleware, takes a lot out of my hands which is great, but makes it extremely hard to know what it’s actually doing. I have no idea, if it’s even trying to refresh the token or anything. But it appears to never invalidate itself.