I read the actual Maryland law. I then read case studies. I further read "intercept" definitions, how intent plays into this, as well as public versus private.
First, no one can detain you and have you searched for recording devices, other than in government facilities (like courts) that specifically do not allow such personal devices. As long as I am not using such recordings as proof of what was said, there is no intent of harm. As long as I am in a public setting, where there is no reasonable expectation of privacy, I can record my surroundings legally as long as I am not using any kind of sound enhancement device (intercept). If someone is yelling out loud and ends up being recorded, that recording is not illegal. If someone is greeting you in a restaurant, in front of other guests and staff, that conversation is not private. As long as I do not offer to use that recording to prove my report is correct then I have not violated intent laws.
Intent and usage are the key, in addition to how and where the audio was captured.
My posts are solely based on my opinions and for my entertainment, contact a professional if you need real advice.
When you get in debt you become a slave. - Andrew Jackson