I think Blackpool has toucans in their Amazon exhibit with Saki monkeys and squirrel monkeys. I think hornbills would maybe be too big or aggressive though?
I haven't seen that combo, though at Niagara's Aviary, there are Silver-cheeked Hornbills kept with Chestnut Mandibled Toucans in its Main Aviary. Ground Hornbills at Toronto Zoo are kept with (or were kept with, I haven't seen them with them for a while) with the Impala and Kudu.
Same thing at Fuengirola (owned by the same company as Bioparc).the Abyssinian hornbills are mixed with gorillas