SDA 2 Interconnect Cable Need to Make One

I have a couple stupid questions about this interconnect cable. I have a set of SDA - 1As which use the Jones type blade/blade sockets. I have the correct plugs.

1) Are the cables standard (big blade to big blade) or null (big blade to small blade)?

I use the 1 speaker on the A set and one speaker on the B set (yes the ground pane between them is common). I run only a single with my TV so I can get a little better bass response and not blast my neighbors out watching a while movie and both A and B for music.

2) Am I going to do harm to the speakers if the interconnect cable is in place while using only one speaker?

Thanks!

Thanks 🙏

Takers on the second question?

Thanks. Yes it would be ideal to run them both on one channel, but I think my neighbors would be pissed about my tv noise at night if I didn’t kill one of the speakers. Sportsball and movies need no high-fi. Might integrate a switch for the interconnect to mitigate the second unit entirely.

Thanks for swiftly answering my questions, however odd the setup seems. I think it is safe to assume that most folks on this forum have quite a bit more space in their residences than I do, but I will not give up the space these speakers consume. I like my music clear and full. Best regards.