If you are working in Canada on a closed WP, you are explicitly barred from working for other employers anywhere. Assuming you had violated that, now there is no point in declaring foreign experience working with employers abroad at the same as working with Canadian employment also. The same applies to income taxes also if you earn money abroad you are liable to pay CRA tax for the foreign income as you are a Canadian tax resident.
Please take proper legal advice and understand the terms of your visa and ensure you have paid the needed taxes to CRA etc.., If any of you are aiming to take shortcuts to get additional points using these not legally sound mechanisms of foreign experience in parallel to Canadian work, I feel you will finally get into trouble with multiple Canadian agencies, fined or jailed and probably even barred from immigration.
