Running Dinamics and download HR datas with Bluetooth/ANT+ connection after activity FR955 + HRM600

Hi!

I'm using a Forerunner 955 solar + HRM 600 combo.

The questions are:

If Im using the hrm with bluetooth connection, can I download the hr datas after an activity? (Im doing triathlon, so it will be important to see the exact numbers after a race ot open water swim)

The running dinamics what are supported with this device combo, are woring with bluetooth or just ANT+ connection?

The HRM 600 offers open and secure connection. Which connection type support wich connection type? What I mean -> secure just with BLE? Or secure also with ANT+? open just with BLE? Or open also with ANT+?

How it works exactly? Which is good for me, if I want to download HR datas after an activity? 

Hopefully someone have informations about this topic

Patrik