> Physical parcels are nearly always delivered nowadays by a system where a driver will turn up on a working weekday, at an entirely undefined hour or in a very wide time window, and expect a signature or at least a human to accept the parcel, immediately, or they take the parcel and go away again.

Have them deliver the package to where you work.

Clearly this doesn't solve the problem for everyone (e.g. if you work in construction, FedEx might not be able to deliver to a construction site), but it does solve a large swath of issues.

Not all companies will let you receive personal packages, especially the larger companies with dedicated mail handling, but it does get you closer.