how does bigg boss know??

Bigg boss asked who does the challengers want as captain from the champions side. As soon as they gave name bigg boss immediately asked dimpy to get letter from store room. in the letter it states Pritam and Karishma to do the spiderweb challenge.how do they know who the contestants will choose and how do they get the letter to them so quick? Wondered that several times before too.

The episode is not shot in the one hour period that they show in the episode, they probably decided in the morning and the task was probably decided in the evening, they edit the episode to make it look like everything happens in the same hour, making it action packed!

i was thinking the same thing

sana said she didnt eat food coz bigg boss called everyone to gather...so i guess ther must be enough waiting time to write the letter