How quickly could Dixon's South American station move information?

What delay did Rear Admiral Manley Dixon face between sending and receiving messages?

The estimate is no more than two to three weeks in this case, using both seaborne and overland routes.

The relevant South American station traffic took no more than roughly two to three weeks in this case. Messages moved by sea and overland, including routes across the continent, rather than relying on a single dispatch channel. Dixon also acted on his strategic judgment before later authorization arrived, sending reinforcements weeks before the formal paperwork caught up. Command initiative mattered as much as raw transmission speed to the British information advantage.