The closing is not the signature only. It is the transformation of a delicate consensus in clear agreement, documented, follow-up and able to produce its effects without reopening permanent sensitive topics.
Formalization of key terms and commitments of the parties.
Verification of conditions precedent, validations, and signatures.
Preparation of the schedule and of the control points.
Communication is controlled, if required, to preserve privacy.
Follow-up post-closing : commitments, payments, documents, next steps.