The meaning of these two words are interchangeable.
Cantonese
心灵相通
心靈相通
sam1 ling4 soeng1 tung1
to be able to read each other's mind
Examples (Wiktionary)
Mandarin
人类的悲欢并不相通,我只觉得他们吵闹。
人類的悲歡並不相通,我只覺得他們吵鬧。
rén lèi de bēi huān bìng bù xiàng tōng , wǒ zhǐ jué de tā men chǎo nào .
Humans' sorrows and joys are by no means connected; I only think that they are noisy.
Mandarin
要使广大群众认识我们是代表他们的利益的,是和他们呼吸相通的。
要使廣大羣眾認識我們是代表他們的利益的,是和他們呼吸相通的。
yào shǐ guǎng dà qún zhòng rèn shi wǒ men shì dài biǎo tā men de lì yì de , shì hé tā men hū xī xiāng tōng de .
We should convince the masses that we represent their interests, that our lives are intimately bound up with theirs.