When postman use opened connection

Hello !

I have simple test in postman like this :

for(i=0; i< 10; i++) 
        function(err, res){..})

post_reuest object contains “Connection:keep-alive” header. My question : will postman open 10 connections for all iterations or will use already opened one ? and will postman use already opened connection after this test, when I will send requests manually ?