
Are the following mentions coreferent?:
<m> said </m> in RBC Capital Markets downgraded ATI Technologies to sector perform from outperform after Advanced Micro Devices announced its intention to buy the Canadian graphics chip-maker for $ 5.4 billion. Even though the takeover looks fairly valued, RBC analyst Steve Arthur said there is limited upside to the offer unless competing bids are made for ATI. For now, Arthur said AMD's takeover deal, which is expected to close in the fourth quarter, effectively offers his one-year price target of $ 21 now. 
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<m> announcing </m> in In a news conference announcing the merger held in Taipei yesterday, Henri Richard, executive vice president of AMD urged investors not to worry as ATI's relations with TSMC and its rival United Microelectronics Corp. would not change. 