I have my symbol & footprint for the board and all is well.
When I come to order, I cannot add the second component as it is not part of the board and the supplier will not ship components separately from a PCBA order - Not a KiCad issue!
However, If I can create /edit a symbol and footprint to include both parts then when I submit gerbers & Bom both parts will be populated to the order and that works for ordering.
I know I can create a dummy symbol & footprint but its messy and slow and risks me forgetting until the end… better (for me) to automate out the issue.
looks like JLC PCB. You can order a PCB at their house and then order the connectors at LCSC. You can even select “ship together” so you get a single parcel with cheaper shipping costs. I think this is what you want
That’s interesting, I had not seen that. Looks like it could be fraught with issues whilst on the learning curve. good service but does then mean self assembly after delivery.