Ekar Shifter/hose Question

[Shane4XC]

Building up my first carbon bike I forgot to attach the cable guide to internally route the rear brake and shift cable.

The Ekar shifter is not set up the same way I’m used to from shimano. There’s a weird silver thing:
https://imgur.com/a/uWkN1dI

I’m used to threading the hose into the shifter with a barb and olive.

In my case, I need to remove that silver piece from the hose so I can put on the cable guide and then re-bleed. Is that possible? If it’s not I’ll need to completely take out the internal hose which will require basically dismantling the whole bike.