Companies not replied in 2< months?

Hi all, currently in my final year of uni and applied to graduate schemes between September - November. I've been rejected by most but still waiting on Aon, Aviva, Hymans Robertson, BWCI and maybe one more. Given they have said they will inform me if my application is rejected, is it normal that I haven't heard from any in over 2 months? Not sure if I should contact them.