Bolg da Goff wrote:The wording is not that Independent characters without infiltrate cannot join units with infiltrate in deployment. It's worded "independent characters without infiltrate cannot join infiltrators during deployment" key change being "infiltrators."
I think its relatively clear it only applies if they are deploying via Infiltrate.
The rules for Infiltrate use both terms (Infiltrate and Infiltrators) interchangeably; you simply are unable to join an Infiltrating and non-Infiltrating/Infiltrator and non-Infiltrator unit and Independent Character combination at deployment.
That said, I would agree in this case it is an oversight.