It all depends on the project and client but overall here are some insights into the way of working in consulting:
The LOP (Letter of Proposal) includes the roadmap and defines high-level what and how we will support the client (e.g., conduct market research, workshops).
The project manager is the one planning the overall work in alignment with the partners and the client. This is an ongoing process and adjustments are made based on new information (data, research, analyses, etc.)
The project manager's key role is in structuring and identifying different workstreams for each consultant that need to be worked on. There will be usually some stakeholders from the client-side for each workstream where the consultant will work together.
Recommendations are given on an ongoing basis to the client, not just at the expected end of an agreed project.
Usually, there are regular meetings with top management and the middle management you are working with directly. In these meetings, you present current findings and align on the next steps.
Our work is done always in close alignment with the client and in a very agile way of working. It is hypothesis-driven and usually developed very closely with the client.
Of course, the working mode with each client and project might be a bit different from what I described above (e.g. operations projects are more hands-on and implementation-focused than strategy projects).