Sex these two mixed chicks

[Avisius]

Hi.
Can you tell me if these two mixed chicks are cockerels or pullets? The bigger one, with spots on the chest is around six weeks old and kinda looks like a pullet to me, even though in its first three weeks of life it looked like a cockerel. I think it's a mix between light brahma X silver laced wyandotte (father) and mottled black orpington (mother).
The smaller one is ten days younger, its four weeks and a half old. I think it has a very undeveloped walnut comb. Probably has the same father as the first, but the mother is unknown. Looks like a cockerel to me...
Chick 1 (six weeks old):

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Chick 2 (four and a half weeks old):

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Thank you!

 

[Rose Quartz]

The older one looks like a boy to me because it's has a pink comb. The parent breeds you've mentioned all tend to have their combs come in quite a bit later, so any pink at this point makes me think boy.

The other one, I've not seen a walnut comb before in person, I really don't know.