appeal or force out

[steveshane67]

on a missed base, at what pt in time does it turn from a force out to an appeal play.

if R1 & R3, 2 outs, GB to RF, R1 goes 1st to 3rd but misses 2nd, after the play the defense appeals to 2nd, gets the out, but the run still scores is one end of the spectrum. the other end would be a routine grounder to SS who flips to 2B for the force out, run does not score.

now what happens on a play, R1 & R3 2 outs, GB to SS, R1 slides into 2nd but never touches 2nd when he slides, then the throw is caught by the 2B, from the SS, is that still a force out?

or R1 & R2, 2 outs, liner to RF, R1 only gets maybe 1 step past 2nd, but steps over the base, RF throws behind the runner, right to the SS, who is standing on the base, is this an appeal play, or a force out?

thanks