Do you realize the contradiction?
In the first part of your sentence, the limit is 230 kts because the slat is actually extended.
In the second part of your sentence, the limit is 300/.65 because the slat has actually extended by itself...
Allow me.
The 300/.65 limit is there for a "just in case it extends uncommanded at some point" situation, as you may not have any indication at all due to u/s indication light. Precaution, just that.
GD&L