Disappeared sound

In languages, sound of words sometimes disappears or is put next word together. It's often the case in Japanese, too. And it troubles non-native speakers.

I thought I was getting used to catching such sound in English recently, but it was my misunderstanding.

I heard;
"So a-lee he still ga a lot of options."

Correct sentence is;
"So at least he's still got a lot of options."

I could catch just "a-lee" was "at least".

No wonder I can't understand English dramas, movies and news.