Saying/hearing is not the same. Parent struggles to hear the differences and says they can pronounce them.

Polish has a retroflex and palatalized “sh” pair of sounds (Sz vs ś) that I can pronounce perfectly but not clearly distinguish as a listener.

I learned Polish when I was 5, moved back to the states when I was 11, barely used it for 7 years, and relearned it when I was 18. I don’t know if (at 5) I ever distinguished between the two. But I certainly struggle now.