Hi Lukasz,
No it is not possible to send multiple pageviews or link tracking in one image request. You will have to send multiple.
The only way that you "could" do it is to create a custom pageview event and link tracking event as numeric event and then pass a value more than one if there were 2 pageviews for example. Disadvantages, you cannot pass specific variables for each pageview, both pageviews will get same variables.
Best regards.
Alexis Cazes