Both at the same time

I am finally reading these two books at the same time.
I read Mrs Dalloway in the afternoons because it is a very old edition and I need to have sun light and a very clear mind to read it. ( I bought my copy of this book in a second hand bookshop in Casablanca in 1983, and I had never read it before now)
The other book, Las Horas, is deeply connected to Mrs Dalloway. I read it in bed because it is in Spanish - much easier for me- and it is a recent edition, so I can read it with my dimly lit bedside lamp.
I am afraid I won't have very clear ideas of who is who by the time I finish reading both books