Same language selector on 2 different Multilingual domains?

[andromedical]

Hello I hope you can help me to clarify my doubts

I have a multilingual domain www.domain.com structured like this:

www.domain.com

www.domain.com/es/

www.domain.com/fr/

www.domain.com/it/

www.domain.com/de

It contains a language selector list on the header where people can change the language of the website like this

English

Spanish

French

Italian

German

I want to move the German language to a separate domain. I have recently bought the LDT www.domain.de especially for that.

QUESTION 1: Can I still mention the german language on the language selector of www.domain.com in order to drive german people (that lands to the English version) to the external domain www.domain.de (maybe with no follow)?

Like this:

English

Spanish

French

Italian

German linked to the external domain www.domain.de

QUESTION 2: Can I also mention on www.domain.de the same language selector like this:

English linked to www.domain.com

Spanish linked to www.domain.com/es/

French linked to www.domain.com/fr/

Italian linked to www.domain.com/it/

I am bit worried because I don’t want to create be interpreted like a reciprocal circle linsk or a kind of link scheme

Thank you