ESA Support Group Migration to UC & Message from Job Centre Re: Work activity

I'm in the ESA Support Group and currently migrating to Universal Credit.
My claim isn't complete yet, but I got a journal message from the Job Centre asking if I’d like a voluntary chat about skills, future options, etc. They said it won’t affect my claim or lead to reassessment and that if I want to know more, I should respond to the journal message.

1. Is it normal to get this kind of message while in the Support Group? Can I just ignore it, instead of replying in journal as I'm long-term ill and not looking into work?

2. I was on ESA with SDP. How long will the transitional protection/extra payment last under UC?

Thanks for the reply. regarding the gradual reduction of the Transitional Element ,is there a set monthly amount they reduce it by? how can I find out what the amount and intervals of the reduction in advance?

Also, when I started my UC migration,I got a some final ESA payments (not the usual 2 weekly amount) after they said my ESA claim had stopped.

I’m also expecting a 2 week housing benefit “extension” they said I’m entitled to. Just wondering, are these “extended” payments on top of what my UC entitlement will be or will they be deducted from my UC when the first payment goes through?