Growing on the same bough or being in the same string of coins—the things (/matters) are logically interlocked
? 這些事情～，我想你是可以理解的。These matters are closely related. I believe you can understand them
同條共貫tónɡ tiáo ɡònɡ ɡuàn
條：指枝條；貫：錢串。同長在一根枝條上，同穿在一個錢串上。比喻事理相通，脈絡相連。be the same sensible, the things are logically interlocked