Assuming that they are two identical panels, they will deliver their maximum power when both are directed exactly towards the sun.
SERIAL CONNECTION:
If they have different orientation directions, when connecting in series, the voltage will be 90V + 80V = 170V instead of 180V in the same direction.
Also, the short-circuit current (maximum) will be smaller than if they were equally directed at the sun. The internal resistance of this underexposed panel will also limit the current of that "better" panel.
The power you can consume when loading with optimal resistance will be less due to the lower voltage and lower current.
The only advantage of the unequal orientation of both panels (when they are stationary) is the power delivered more evenly. For example, in the morning, more power is given by the eastern panel, at noon they give the same power (though not the maximum) and in the afternoon more power is given by the west panel.
PARALLEL CONNECTION:
Panels with different voltages should not be connected in parallel. (like rechargeable batteries). If it really depends on it, it is only through diodes preventing equalizing currents between the panels. The power possible in such a system will never reach the power of two panels equally directed at the sun. The only positive thing is that the power is more evenly distributed throughout the day.
The optimal design is to set both panels to the same direction and rotate to follow the sun, or to set using a programmer that remembers the current month, day and time and regardless of whether it is a sunny or cloudy day, positioning both panels towards the predicted position of the sun.
