John Williams' Jurassic Park / Sibelius' Symphony No.3

Ok as I'm sure most of you know, most of John Williams' film scores are taken from classical works ... in fact basically all of them. Anyway last night was at a NZSO concert and I swear in Sibelius' 3rd Symphony, there were FOUR themes from John Williams' Jurassic Park. Has anyone else recognised these?? Or was I just hearing things?? Let me know...