On the server side (say Host1.com), where the Cookie (say Cookie1) is created and Domain is explicitly specified to some other domain (say Host2.com), does it have any meaning at all ?

I mean by doing so, is there any possibility that this Cookie1 would get attached to any requests made to Host2 at all (considering it to be like a 3rd party cookie) ?

I understand that with the SameSite option, we can control the scenarios where this cookie can get attached/sent along to the server from UI...But I assume all those scenarios would always be related to Host1 and not Host2 (despite us specifying the domain explicitly to Host2.com)