The Melinda time is a term used to refer a time higher than the current bold time that theoretically could be obtained, but would require extreme luck and/or skill - often both - to obtain. They are almost always caused by the use of random elements.
Requires extreme luck with random force floors near the end: Chip must push the block on them, and it must stay there long enough for him to open the red lock and move either DL or DR to safety. Whether 717 or a lower time is reached depends on whether the block arrives immediately after the DL/DR move or takes slightly longer.
Skelzie is one special case: its bold route is 454.2, and with Chip's (2U) move to a green button possibly being covered by a blob, 455 may be possible. Whether the pink balls remaining in the telenet that makes up the nine main rooms of the level will delay Chip longer than they do in the 454 route, and whether the Teleport Skip Glitch can even be used effectively with the different ball locations, are unknown because applying and executing the glitch is difficult - and limited to only MS play.
Requires an alternate path that is very risky because of the high concentration of blobs, and for blobs to delay a teeth from moving towards Chip on at least two occasions so that it does not interfere with his moves.
The Melinda time is difficult to calculate because of the large amount of random force floors and the erratic pattern of the toggle walls. When the bold was 476, the time was calculated as 488, but improvements in the non-random area of the level have left this total indefinite.