Yes. It is identical. It is 43 seconds in.
In the Byrne version of the gesture there is an Indian or Pakistani or Bangladeshi woman doing the same hand dance in the background so I presume that it is traditional. Sorry, I see that the OP had pointed out the traditional nature of the gesture too.
It seem to be that Sigrid did a vaguely similar sort of chopping motion with her hands, so I googled Byrne and hand dance and arrived here.
https://rapidcityjournal.com/blackhills ... 680d2.html
Interestingly, though, his signature gesture — the famous “arm chop” during the refrain, “Same as it ever was” — was inspired not by evangelical ministers but by Japanese dancers.
Byrne explains that he was visiting a Tokyo park one day when he saw several dancers wearing brightly colored, futuristic costumes. He shot some video footage of the dancers and it wasn’t until later—after seeing the footage of “Stop Making Sense” — that he realized that this arm movement was inspired by one of the Japanese dancers he had previously videotaped.
I am in Japan. There are a variety of Japanese hand dances. The shy Japanese are not so keen on moving their whole body due to shame unless they are very good at dancing, they are in front of a mirror (hence "dancing with myself" lyric in some song) or they can see the body part which they are moving, as is possible in hand dancing. It is still the norm in Okinawa. Here is some Tsugaru hand dancing from the North of Japan. It is not the one that Byrne copied.
The cross on the clothes in the Talking Heads video suggests that they are part of a religious group. Tenrikyo does hand dancing but I don't think that they use the symbol of the cross. The dancing religion near me (in Yamaguchi) did however mention Christ. I will look up their dance. I can't find the local dancing religion (Tenshō Kōtai Jingūkyō) dance on Youtube but it is called Muga no Mai (no-self dance) and it looks different. I am starting to realise that there are lot of religious hand-dances in Japan.
There is a miners song dance in which the hand gestures all refer to actions carried out by the miners (digging, carrying coal, and pushing a truck) so this arm chop may have some reference to manual labour or perhaps chopping up vegetables!
But then again, it really does look religious due to the cross and the fact that the dancer is wearing a badge in the centre of her dress picturing a woman with mickey maus ear like hairstyle. There are a lot of Japanese (newish) religions founded by women including
Tenshō Kōtai Jingūkyō (Kitamura Sayo) (mentioned above)
Tenrikyō （Miki Nakayama)
Oomotokyō (Nao Deguchi)
Tenchiseikyō (Kayo Kawase)
And Miki Nakayama had big hair
https://www.kosho.or.jp/products/detail ... =136996501
But this move does not seem to be a part of the famous Tenrikyō hand dance
Kayo Kawase also had big hair
but I can find no mention of a dance. However, they were claimed to be affiliated with the Family Federation for World Peace and Unification (also known as the unification church and the "Moonies" after the name of the founder), may use Christian symbols, being a unification church. The Family Federation (of Korea) does do a dance called the Unconditional with lots of hand movements, but I can't see this one in particular e.g. in this group of suited Korean dancers.
I have never head of Maus but I will google him too. Aha. Friend of Pink.