<<Astral Connector>>
Many of the close calls that Noah faced in the past were because someone proficient in spatial techniques would simply lay down a spatial lock and that would close off all exits.
The first time he felt this feeling was during the True Apocalypse of the Lost World where the power of the Celestials blocked off spatial transmission for an entire planet. The only reason he kept his life during that time was because of the mysterious Karmic Sect Leader that had faded away in front of his eyes some time ago.
The other time was during the first exploration of the Treasure Abode of the Devilish Time Unveiler, where running away was once again made to be impossible. Noah didn't like this feeling, so he strove to get his hands on a skill that would render this problem obsolete.