you should watch the movie because it's crystal clear, it's all thx to their blood aka their dna.
the Moon clan and the Earth clan are direct descendants (unlike Naruto and Sasuke with Hagoromo) born with Hamura's chakra, the main branch (like Hinata and Hanabi but also the beard ghost whom met Hinata in the cave and started the genjutsu using the glowing violet ball) are just more pure than the 2nd branch (like Toneri and his entire clan) in their respective clans.
the only exception in theory are Hizashi and Neji for obvious reasons, Hizashi was put in the 2nd branch because Hiashi was the first born in their twins pair.
nothing implied that Neji's mom was less pure either so he could have been from the main branch probably but even if his mom was from the 2nd and less pure, Hiashi stated many times how strong he was so i guess Hamura's chakra was also strong in him.
there is no scene in the movie neither in the novel neither in all the databooks showing Hamura giving his chakra to Hinata just like Hagoromo did with Naruto and Sasuke, so nah, sorry you are wrong.