Bill, I'll send you a private link to a modified XPF file..
There are a couple things I changed.
1) On the B2B rules; you currently have a condition checking that the other scene has to be the same scene as this one. This means the B2B will never execute when you go from a Host L3 to a 2 line L3.. This is not what you want. You need to have a condition that checks to see if the other scene already online is one that you want to use B2B transition between. I change the rule to look for "other scene is named NEW *".. This looks to see if the other scene has the word NEW at the start of it. This works because you named all your scenes "NEW L3", "NEW Host", etc.. You could have any other prefix you want, for example prefix them all with "L3" then look for "L3 *" in the scene name condition.
2) On the IN/OUT rule, you don't need the condition to check that there is "nothing online". It will automatically use the IN/OUT rule if it does not find anything that matches the B2B condition. With the condition you had; it would prevent it from playing the IN / OUT animation when you take that scene online and you have any other scene online.
#XPression