Or HaChaim on Genesis 24:45/אור החיים על בראשית כ״ד:מ״ה

1 אני טרם אכלה לדבר אל לבי, "I had not yet finished speaking (praying)." Eliezer said this so no one should think that Rebeccah's actions had been prompted by what she had overheard Eliezer saying.