Harbor Token Expiration (Minutes) setting

[ep4sh]

Dear community,
could you please explain some features regarding token lifetime with OIDC.

I use OIDC (keycloak) and harbor (works perfectly, btw).

My token expiration is 360min, but it looks like the token is being expired earlier than the desired timeframe.
I guess it could depend on OIDC parameter like refresh token, isn't it?

thanks in advance,
P.