Here's a context.
A month ago, I met a friend of mine and we talked about him going to America next year. And I met him again yesterday, but I don't remember what exactly we talked about. So, at that time, I said like this:
I vaguely remember you saying that you are thinking of going to America next year, right?
I vaguely remember you saying that you were thinking of going to America next year, right?
I vaguely remember you said that you were thinking of going to America next year, right?
I vaguely remember you said something about you going to America next year, right?
I vaguely remember you saying something about you going to America next year, right?
.#1 - has to be were
And the others have difference in vagueness, but all are possible and common to use right?
PS. remember and recall is interchangeable without changing any nuance?