At the time of running the quest I wasn't aware of the way the lore was being distributed but here is how I believe it happened for me - - I did the start of the quest on one character, which included speaking to Zavala and receiving the first 2 lore parts. - At some point in the middle I changed character and finished the quest and completed any further discussions with Zavala. No lore was granted. - I've been back on the original character since and there is no pending dialogue or lore available from Zavala and the quest is gone from my inventory (it completed account-wide). From everyone I've spoke to there should be 4 lore pieces so far if you have completed the questline. I've seen a few other similar reports of only having 2 but each case seems to have its own specifics. To clarify - I have the ASHER and SLOANE lore portions. I'm missing the ANA and VANCE lore. I've also gone and spoken to those vendors and completed some additional weekly planetary quests hoping that would grant the lore but no such luck. Thanks for the reply and thanks in advance for checking it out!