So what makes them thinking that a transition needs 6 months to happen?

What about my current transition - which was 2 weeks notice, and merely 1 day transition - strictly speaking?

This is a big organisation - yet you have so many workforce issues - On what are you trying to sell?

On what can you sell?

Yes headcount is a cost - but if you stress people - talented people will leave - it is a greater lost.

If you think we are contributing high cost to the company - very simple, once we find the job, we will leave.

We leave because we don't agree with this company anymore.

We leave because you don't care about employee anymore.

We leave because you treat employee as cost, not asset.