As answered, yes, you should assume the hiring manager is / will be aware.
In response to what you said in the comment:
It colors my relationship with the hiring manager if I accept the offer. It's an indicator of how much I want the job ("I'll work for you, bit not for what you wanted to give me.").
Most managers understand that you are accepting a job in a large part because you want or need money, and will not hold this against you. Additionally, everything that could be interpreted negatively can also be interpreted positively. For example, asking for more money can demonstrate that you have confidence in your own value.
When you ask for raises after you've accepted the job, that will also start with your manager. Are you going to hold back then so your manager doesn't think you're greedy? If you aren't willing to advocate for pay raises in your career, then you will end up underpaid. Lastly, I've never had a manager hold looking for a raise against me. Work is a business transaction and most people understand that. As long as you aren't jumping jobs every year and expecting a huge raise each time you'll probably be fine.