I think it's pretty cool that both cultures independently discovered this technological advancement, to use an architectural arch to brace against the pressure of a hillside. However, correlation does not imply causation. I do not believe nor should you that there was an ancient link between these two cultures
ACHAMAN GUAÑOC: Prueba De Que Las Tecnologías Antiguas se Adelantaron A Su Tiempo…(I)
Camels under Giza Pyramids. El Cairo
Two camels under Cheops Great Pyramid in Giza, Cairo, Egypt. It is difficult to imagine that theese millenary Monuments are so near of this crowded city... | Cityscape by Alberto Mateo, Travel Photographer.
Bolivia, Pumapunku, Stone Decorations « UFO-Contact News
Кузнечно-прессовый цех 2 - Страница 4 - Форум проекта "ИСИДА"
drilling marks show a faster feed rate as to what modern engineering can do - Google Search