Audacity 4 documentation · Primary-source explanation; examples are illustrative. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Choose a join rather than a pause
The current Audacity Crossfade Clips guide describes fading the end of one clip into the beginning of another within the same track. The clips need not touch: intervening empty space is ignored. A visible gap is consequently not a reliable way to preserve a deliberate pause when using this effect. Decide whether the intended result is an overlapping transition, an abrupt cut or two items separated by silence.
Select the actual boundary material
For an original example, two permitted commentary takes have room sound at their edges, separated by an empty interval. Work on a copy and select a small amount from the first take ending and the second take beginning. Keep both selection boundaries within audio, and ensure that no more than the intended two clips are selected per channel. Apply the effect, then listen through the join rather than judging only the waveform at the centre.
Review what follows the transition
Check that the join does not swallow a useful syllable, create an unnatural overlap or change timing which must match a picture edit. If the pause itself matters, undo and use an edit designed to retain it. The same documentation notes a different behaviour when the selection contains continuous unsplit audio: its two halves are crossfaded. Confirm the clip structure before applying the command so that a smooth transition is made from the material you actually intended.