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Matching rules in tMatch Group Component

Hi,
How are the multiple matching rules applied to the same data in tMatch Group? If a pair of records match by Matching Rule -1 as well as Matching Rule -2, is there a preferential order that is followed based on the sequence in which rules are declared? For eg, Is Matching Rule -1 preferred over Matching Rule -2 or is it a simple OR between all rules with no preference?
Thanks,
Shaivya