Weller generally has half an hour in the morning and the same again, may be a bit longer in the evening. It depends on weather, hubby getting home on time and whether he wants a pint with the dog or not
Izzy has a brisk hour in the morning with lots of running off lead. In the afternoon she may get another hour but usually half an hour. This is interspersed with a few short ball game sessions (15 mins) where she runs the length of the garden at high speed many times (until I get bored, she never does).