Reference for Bava Batra 330:11
אליבא דר' נתן לא תיבעי לך השתא עדים מצרפינן דייני מיבעיא אלא כי תיבעי לך אליבא דת"ק דר' נתן עדים הוא דלא מצרפינן אבל דייני מצרפינן או דלמא ל"ש
the question does not arise, since, [according to him, such evidence<span class="x" onmousemove="('comment',' Given by each of the two witnesses at a different time. ');"><sup>27</sup></span> can] not be combined even where [it was given before] one court. The question, however, arises according to R. Nathan.<span class="x" onmousemove="('comment',' Who allows the evidence even if each of the witnesses appeared before the court on a different day. ');"><sup>28</sup></span> Is [the evidence] combined only [where it was given] at one court, but [if] at two courts [it is] not combined, or [is there], perhaps, no difference? And he sent to them [his reply]; I am not worthy of having [this enquiry] addressed to me, but your disciple is inclined to the opinion<span class="x" onmousemove="('comment',' Cf. supra, p. 720. n. 11. ');"><sup>29</sup></span>