Board Thread:VS Debates/@comment-31816534-20170606023747/@comment-26374068-20170721194955

Not always, actually. Mario received Luigi's message when they were babies as he prepared for landing.

This happened in Yoshi's New Island, so the fact they could contact each other flawlessly across such a grand distance as babies is... very impressive. When in such close quarters, grown up... who knows how good it'll work. So the Bros. have been shown to function their telepathic bond whilst multi-tasking.