The trio was surprised to discover that the leaders didn't condemn their escape. Actually, they even praised the three of them for their bold move.
The rank 5 cultivators weren't happy to submit to a power that they considered inferior. So, seeing that three rank 4 cultivators had successfully defied the orders of the six bloodlines created a sense of satisfaction inside them.
Of course, they had to wait for the situation inside the castle to stabilize before contacting the trio. The Elite humans were particularly mad, and the leaders had to deal with those angry cultivators for two entire weeks before concluding the negotiations.
It wasn't that they couldn't contact Noah and the others before. They simply didn't want to do that to protect the trio.