TPS2378: PoE integrated RJ45 connector safety clearance and creepage to body case

I'm building Gigabit PoE camera and got stucked with connector safety (IEC60950). How much clearnace between body and primary pins enough? I can't find accurate values of clearance and creepage for PoE on web (i saw 2..3 mm recommendations).  Ok, I'm building 100VDC device with 1500V primary to secondary isolation. I spent days digging in IEC and UL840 and web. I see 1.3mm clearance for <=210VDC device 1500V isolation 3rd pollution degree. Hmm, maybe i 'm wrong and dont understand. I'm ready to put 3 mm to overestimate it and sleep, no problem. But there is another challenge - connector. All TI PoE reference design boards are built with pair of empty RJ45 + dedicated magnetics and there is much clearance always. But look at the integrated PoE connectors. There is something like industry standard for 1G PoE connector: 0826-1X1T-GH-F, LPJK6064AONL, JK0-0177NL, 7499511440 and so on all the same footprint. But. Look eg at that image of LPJK6064AONL connector. There is just about 1 mm of clearance. Is it OK?