Actually that's not what Socionics sources refer to, ever. Jung is different here.
I knew someone who told me once that he had a parallel thing running in his head while also being aware of his environment. Like idk, images, imagery of it. Same person told me he once was driving in winter and there was snow outside, the window was not open but it was like he was smelling the snow anyway.
(And no he didn't type as Si lol and there is no point in categorising this, to me)