Ah, thanks for the response. But are you certain about that? This dealer site indicates that it is a two-way system:
Research - 2022 Kia Carnival
“DRIVER AND PASSENGER TALK: A new two-way intercom system allows the front row to communicate with passengers in the 2nd and 3rd rows…”
(Although I can’t find the referenced footnote #2. Probably something along the lines of available in every trim but mine.)
As does this video:
(1:40 mark)
As do hundreds of other dealer sites, although they simply replicate the powerkia page above:
Get the Kia Carnival that you want at Barker Kia, serving Houma, LA.
www.barkerkia.com
2022 Kia Carnival
www.valleykia.com
www.happykia.com