yes, having checked a cataloue it is definitely possible to get a 720mm high double oven that fits under the counter, and the hobs sits within the worktop (if 40mm deep, some are 55mm deep and so they'd protrude under by 15mm or so)
A standard single oven has a capacity of 53 to 58 liters or thereabouts...
A standard double oven has two ovens, one is 53 to 58 liters as above, the second is smaller at 34 liters or so.. these oven are 880 tall or so and will not fit under the counter.
A smaller, under counter, double oven has two smaller ovens, the larger oven is 42 liters, down from 53 to 58 liters above... the smaller oven is still 34 liters capacity or so.. these ovens are 720mm tall and fit under the 890mm counter, above the 150mm kickboard, and it should be possible to fit a 55mm hob above although some tweaking may be reqiured...
These figures are from the Gorenje cataloge...
Cheers
Joe