There are a variety of different tests which can be carried out in order to evaluate the potential effects of a lightning event to an aircraft. High-level current tests are generally useful for assessing the actual damage on structures. One the other hand, low-level tests are the common approach for establishing the transfer functions of the external environment applied on the component to the internal environment resulting on systems provided that non-linear effects are not significant or are controlled and compensated. In this paper we compare the results obtained in a high level lightning strike testing campaign with the results coming from a low level direct current injection testing campaign both carried out on the same aircraft hybrid cockpit (CFC/metal). The tests results are complemented/compared with simulation activities. Additionally, ad-hoc test set-up were manufactured for each test campaigns and are analysed also in this paper.