The Pope Gives Definitive, Clear Answer to Questions of Divorce, Remarriage and Sacraments

Assuming post-synodal exhortations are magisterial, (I am not convinced they are) and magisterial teachings may lawfully be developed, but not negated, (of this, I am convnced.)

Reconciliation in the sacrament of Penance which would open the way to the Eucharist, can only be granted to those who, repenting of having broken the sign of the Covenant and of fidelity to Christ, are sincerely ready to undertake a way of life that is no longer in contradiction to the indissolubility of marriage.
This means, in practice, that when, for serious reasons, such as for example the children's upbringing, a man and a woman cannot satisfy the obligation to separate, they "take on themselves the duty to live in complete continence, that is, by abstinence from the acts proper to married couples."
Similarly, the respect due to the sacrament of Matrimony, to the couples themselves and their families, and also to the community of the faithful, forbids any pastor, for whatever reason or pretext even of a pastoral nature, to perform ceremonies of any kind for divorced people who remarry. Such ceremonies would give the impression of the celebration of a new sacramentally valid marriage, and would thus lead people into error concerning the indissolubility of a validly contracted marriage.

Well, that answers that.

So, dubia schmubia.