Both will be individuals with their own charts, as siblings always are. Ra's point was about the background: a child born before the change carries the Planning frequency for life, and a child born after grows up with the new individual frequency as normal. He expected the later generation to be more independent and less interested in loyalty and the old bargain. Most children born after 2027 are still human. Raising each child by their own Type and Authority works for both.
This is not a fact, not medical advice and not a promise of healing. It is part of the cosmology Ra Uru Hu, who founded Human Design, left behind, and nobody knows exactly how it will unfold.
Free, no account and no email. Every answer here was written by hand from what Ra Uru Hu left behind, not generated. Ask your own question at The 2027 Oracle.