With a person on the track near Paddington, a driver was told by the Line Controller to remain at Royal Oak. The driver then got another call on the Connect system - which shows an 8-digit code rather than a caller ID - telling him to reform and giving authority to proceed, which he did.
Fortunately, the Supervisor at Paddington was aware of the situation and held the train there, thus averting a potential tragedy.
Which all goes to show two things - that Connect remains a total disaster area; and the importance of the availability of station staff to the safe running of the railway.