No Kabbalat Shabbat for Shabbat That is Also Yom Tov
Major parts of the regular Friday evening services are:
Kabbalat Shabbat, Shema, Shabbat Maariv Amidah, Kiddush for Friday evening.
If Friday evening is also Yom Tov (Festival),
(1) we recite Yom Tov Amidah instead of the Shabbat Amidah
(2) we recite Kiddush for Yom Tov evening instead of Kiddush for Friday evening
The other prayers are the same.
Please explain why we omit Kabbalat Shabbat
if Friday evening is also Yom Tov (Festival).