Dual/Multi-branding jobs

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Our company currently recruits for two different brands, but under the same umbrella.

We are curious how other companies who have a similar set up or structure handles branding/candidate experience. We currently have two career sections, but there are jobs that cross post. So for company A, the job will be on company A career section AND company B career section. But if you apply on company B career section, that won't be the company you will be working for.

Any one else deal with something similar and would share what they do? You can message me if you don't want to post here.