How often German raiders avoided R-class convoy escorts

How often did German warships have to run away from slow R-class battleships?

Roughly three or four occasions are recalled for the 'terrible twins' early in the war, with German cruisers doing so less often.

The main examples involve the German 'terrible twins' during the early part of the Second World War. The estimate is roughly three or four encounters, with German cruisers also withdrawing on less frequent occasions. In one example, the twins moved between two convoys, each covered by an R-class battleship. An escorting battleship could deny a raider access to merchant shipping even when the raider could escape it.