References to Jack and Kate’s first meeting and the counting to 5 story :

“Did you ever use a needle?”/”You want me to sew that up?”/”1.2.3.4.5”/”You remember what story I told you when you were stitching me up?”, “Yes I remember!”/”So you counted to five…”/”Looks like I’m gonna be your nurse”“Wouldn’t be the first time”/”Remember when I sewed you up, when we first got here?”/Jack sewing Kate’s wound with a black thread/”I’ll be fine, just find me some thread and I can count to five”/ Jack remembers the first time he saw her