Speech Segmentation Phase and what happens later?

I´m listening carefully and repeatedly a lot of mp3 at same subject, I´m able now to percept word boundaries in speech, a lot of word I understand a few words I forgot, I saw this is called speech segmentation phase.

My question is what happens later? I mean not the finish when I will get fluency but in the midst of journey?

Anyone can describe that “AHA moment”?