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During the broadcast, Jinusean shared that they were in a KakaoTalk chat room with other singers who attended 'Infinite Challenge's 'Saturday Singers' ('ToToGa') special. Jinu then said, "In the 'Infinity Challenge' KaKao chatroom, everyone went quiet when Sean mentioned coal delivery." 

By "coal delivery," Jinusean are referring to the campaign in which participants donate and/or deliver coal to senior citizens, the disabled, and families with low incomes to help them stay warm during winter. Sean explained, "On that day, there were around 200 messages, but now people only chat in the chat room every other day." 

Jinu then said, "[Sean] triggered the silence. Sean constantly asked people in the chat room to deliver coal [for charity]. People would say that they were overseas and busy, and then [the chat room] would go quiet," causing the studio to laugh at the awkward situation.