I am reading this article about managing site collections inside our sharepoint online Planning your SharePoint hub sites . so inside our organization we want to start with 2 departments HR & Finance. so i created 2 site collections under these urls
/sites/Finance/ and i define them as Hub sites. then i created more detailed site collections for the HR and finance such as HR-Procedures,HR-Team,Finance-News, etc… and i link those sites collections to either the HR or the Finance Hub sites. and things are working well.
But my issue/question, is how i should link the hub sites together (on our case the HR and Finance)? i mean we can not have a parent hub site for all the hub sites, so how sharepoint cover this requirement ? In other words when a user access our sharepoint intranet, the user should be able to view all the available Hub sites links, but in our case we can not have such as site, as we can not have a parent hub site for our HR and Finance hub sites.. so which site template inside sharepoint online should be used to link all the hub sites together ?