be contiguous

References in classic literature ?
If this event is to cause another event, the two will have to be contiguous in time; for if there is any interval between them, something may happen during that interval to prevent the expected effect.
The downside--all files had to be contiguous Disks with plenty of space, but lacking one free space large enough to accommodate a new file, were "full.
The file structure of Digital's early PDP-11 required that all files be contiguous.