EVO ONE 2 blue interface port shown in RFK912 Install guide

Question

RFK912 Install guide shows 2 blue ports (B & H) for EVO ONE.

Blue port B (next to white) - (4-PIN) DATA-LINK ANTENNA  

Blue (slightly bigger) H - next to FLASH-LINK UPDATER PORT - is labeled as  (4-PIN) ANTENNA

1. What is the difference between them

2. As i understand, port B (slightly smaller 4 pin) is used to connect RF antenna.

3. What is the use of Bigger blue port (H)

4. If someone wnats to connect both RF kit remote as well as my car module; how do we connect to EVO ONE or any extra wire kits needed ?