If you consider a blackhole and a whitehole, if these two connected events are synchronized, they would be connected in time, but not in distance, since both events are too far away for this instantaneous connection. A connection in distance would appear to violate C (time for the energy signal to travel the distance of their connection is nearly zero, due to their synchronization in time). This would violate the speed of light.
To allow this this connection to happen, we first need to dissociate space-time at the blackhole center, into separated distance potential and time potential, so each can act independently. Now we can maintain a common time, for the pair, apart from the C speed distance constraints of connected space-time. We then need sufficient disociated distance potential, for an entropy to mass conversion at the white hole.
The blackhole is lowering entropy, since it is restricting the degrees of freedom of matter into a point (zero entropy or degrees of freedom). A cloud of stella gas has more entropy as a cloud, than after it is squished into a blackhole. The event horizon of the blackhole is trying to increase entropy, so the 2nd law is not violated too much.
In the case of a blackhole and whitehole pair, the event horizon of the blackhole is not able to increase the entropy, as fast as the entropy decreases at the point center. This sets a potential within the universe for entropy to increase elsewhere within the universe, so the second law is not violated. Stella and planary orbits around the blackhole, instead of a crashing into the blackhole for compression, help maintain some additional entropy, but this is still not enough. To suck these into the blackhole would violate the second law even more.
The center of the blackhole undergoes a mass to time conversion. A connstant input of mass can not occupy the same point within space and still remain mass. But time can do this. This excess time potentialwithin space-time will synchonize the white hole.
The time potential, between the blackhole and some random entropy point, tries to connect the entropy potential deficit being generated by the blackhole within distance. If this entropy potential point appears within empty or rarefied space, there is nothing of sufficient substance for entropy to increase as much as is needed. If we picked the center of a star, we do things bettter.
The distance and time potentialwithin the blackhole, will need too undergoes an entropy to mass conversion at the empty formation point of the whitehole. Now the extreme entropy potential deficit, generated by the blackhole, can be expressed, via the rapid ejection of new matter out of the whitehole. Now the net entropy of the universe follows the 2nd law and all is well.