linkman
/ˈlɪŋkmən/noun
(pl. -men /-mən/)
1- Brit. a person serving as a connection between groups of people〈英〉联络员。
1.1
- a person providing continuity between items in a radio or television programme or between such programmes（保持无线电广播或电视节目内容连续性, 或节目之间连续性的）连接人。