Leads me to ask why would they when planning approval has not been granted?
The examination is due to close on 19th April. They've negotiated two procedural deadlines and five process ones, and there are only four hearings and two more deadlines to go. The draft DCO has already gone through several versions (I've not been to look at it, though). After that, the maximum allowed times for the inspectors to write the recommendation (three months), for the SoS to think about it (three months), and for waiting for a judicial review (six weeks) takes us to 30th November. Of course the first two bits could be done quicker.
Presumably NR think it will take them that about that long to do the pre-contract stages of this, i.e. selecting contractors and talking about how they'd do things. And shouldn't they know?
Selecting a contractor yes, but why would they actually carry out:
However Natural England also said that Network Rail has made “little progress on implementing agreed measures” in its Site Management Statement (SMS) and Vegetation Management Plan (VMP), which would ensure the conservation and enhancement of ecology and vegetation on the route.
before grant of planning permission.. ..unless planning permission is a foregone conclusion and is just box ticking. In which case the whole planning permission exercise is a very expensive waste of money.