1. Take expert opinion on timing if the road is new or unclear 2. Don't Appleshine, don't do over commitment 3. Most important: Have plans for interim reviews and feedback incorporation. It'll facilitate mutual understanding, reduce gaps, mitigate tensions and adjust deadlines if required.

Managing client expectations in a project with timeline threats requires proactive communication, strategic planning, and transparency. Engage clients in decision-making to ensure they feel in control and part of the solution. Also, set clear communication channels for feedback and clarifications.

Establishing a buffer within project timelines can mitigate risks associated with unexpected data processing delays or algorithmic complexity that requires iterative refinement. Keeping resource allocation flexible helps address uncertainties like unforeseen computational loads. Implement scenario analysis and sensitivity testing early to assess the impact of variable inputs on timelines. Prioritise transparency through detailed progress reporting, with Gantt charts highlighting dependencies and critical paths. Address technical bottlenecks through a risk management framework, ensuring decisions are informed and efficient under constraints.

It is always possible to have regular check-ins with the client and present the work in progress. These updates would keep them informed and would convince them that the operations research project is moving in the right direction. Further, if there are any challenges or blockers, it is better to the client in loop, so that they can also be engaged pro-actively in final resolution. However, it is important to spend enough time on planning and setting realistic milestones. This helps in preventing occurrences of timeline threats.