Two apps, and fix the gap instead of merging them, because the gap is a habit problem rather than a tooling one.
The rule that solved this for me: notes are allowed to contain tasks, but a task is not real until it exists in the task app. So when I close a meeting note, the last thing I do is copy any action out of it. Ten seconds. The note keeps the context, the task list stays the single place I look.
Merging into one tool usually produces a system where your task list is full of half-written paragraphs and you stop trusting it. The combined apps are genuinely good at one of the two jobs and mediocre at the other, and which one they're good at is easy to find out in a week of use.
On your actual constraint, browser access on a locked-down work laptop is the thing to test first, before anything else. Some corporate setups block the exact domains these tools use, and that's a much shorter list of candidates than the feature comparison suggests.