Although 连 and 联 both mean 连接(connect) and 联合(join), there are some subtle differences in their usage.
连 focuses more on physical connection, which can refer to the continuous connection ...
All languages shorten speech. We know from practice and context what is meant.
But i dont know the reason why 的 is there.
You can leave out 的
Wanna watch, register now.
If you ...
连 is usually to connect in a physical way, i.e. 连线 (draw a line between two entities), 连接 (to connect things). 联 is more metaphysical, i.e. 联合 (to union), 联系 (connection, in the metaphoric sense), 联络 (...