No, even with them being much closer in time, than the 35 minutes they were, it wouldn't matter as long as separate P and S
wave generation and arrivals can be identified.
With this sequence, the M 6.3 can be classed as a foreshock and the M 6.4 as the main shock.
(on a side note, I am quite surprised that they only got 6.3 and 6.4 considering the amplitude.
I have seen similar amplitude events from that area listed in the high 6's (6.6 - 6.9))