How does this sentence work

Question

予定や経学が実際と違った場合を話してください。

"Please talk about a case where plans and plans practical and changed." I intentionally left my translation in this rather desolate state because it shows my 2 problems very well.

1) I don't really know how to convey a semantical difference between 予定 and 実際.

2) 実際 is a noun here, but 違った is a verb. Since 違った is past tense, I could imagine coaxing some noun-ish semantics into it since it kind of describes a state (in the end, past suggests that something has happened/is finished already). Nevertheless, even if both were nouns I wouldn't know how to give it a meaningful interpretation, because

(NOUN (subject) + が + complex noun-ish phrase + 場合) = very intransparent object of the full sentence

Answer 1

How does this sentence work?

• AがBと違った場合 = "a case when/if A was different from B"

  B is "reality", so "a case when/if A was different from reality"

  A consists of A¹ and A² connected by "or" (A¹やA²); as of this moment A² contains a typo, but it doesn't influence how this sentence works

• を話してください = "tell me about", "give me an example"

Answer 2

I assume that 経学 in your sentence is 計画.

I'd translate.

Could you tell me if you are going to do and what you are planning were to different from what will have happened?

違った is used in the hypothetical condition.