Yeah, that’s what I interpreted. That’s what I enabled with the steps I mentioned. I have the English keyboard enabled in Heliboard. I tapped on it, and added Polish in the “multilingual” section.

I both typed and swiped to właśnie zdanie (this exact sentence) i słowa w nim (and the words in it). Simultaneously.

Added is a screenshot for reference. If you meant something completely different (like letter gesturing?), sorry, I don’t follow.