CHG or no CHG in Bronze Age western Iberia?

Here's what Martiniano et al. had to say recently in regards to the genetic shifts in what is now Portugal, western Iberia, during the Bronze Age that they saw in their ancient DNA data:

A recurring feature of ADMIXTURE analyses of ancient northern Europeans is the appearance and subsequent dissemination within the Bronze Age of a component (teal) that is earliest identified in our dataset in