Is that some kind of record for quickest back-to-back blocks?
[4 min 11 seconds] (at least for the last year or so of mining - certainly since the last halving)
Consecutive blocks in the global blockchain - 456826 then 456827. NICE!

#   Height   Who   Block Reward   When UTC   Status   Diff   Diff%   CDF   100 Luck%   B
1751   456827   16hNunxPKj42L1…   13.23997482   2017‑03‑12 01:35:25   +6 Confirms   1,429,409,606   0.310%   0.003   97.96%   1
1750   456826   dance191.S7120   13.75985443   2017‑03‑12 01:31:14   +7 Confirms   197,300,277,376   42.820%   0.348   97.13%   2

Keep 'em comin'!