Where the bus dropped us appear to be CTA only, baggage belt 8 was enclosed from the rest. Looked like EI/FR and BA share the single area.
One amuses they were split to avoid people slipping into CTA unchecked.
There must be 20-25 CTA flights on average and even more when BFS operated and those alone probally generate over 2 million passengers in S Terminal. No room in N?