Abu Zur'ah says: I heard Sayyiduna Abu Hurayrah (may Allah be pleased with him) narrate that when the Messenger of Allah (peace and blessings be upon him) stood up for the second rak'ah, he would begin the recitation at once and would not pause.
This hadith makes it clear that there is no pause before the recitation in the second rak'ah, and it is a sahih (authentic) hadith. It is also possible that (what is meant is that) the pause of the second rak'ah is not like the pause for the opening supplication in the first rak'ah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 3083