I don't quite follow that chart Mags - but Christ was our Passover lamb, sacrificed on the day of the Passover, he ate the supper with the disciples the night before.
Correct, and during that evening, He instituted the New Testament Passover service...
Luk 22:15 Then He said to them, "With fervent desire I have desired to eat this Passover with you before I suffer;
Luk 22:16 for I say to you, I will no longer eat of it until it is fulfilled in the kingdom of God."
Luk 22:17 Then He took the cup, and gave thanks, and said, "Take this and divide it among yourselves;
Luk 22:18 for I say to you, I will not drink of the fruit of the vine until the kingdom of God comes."
Luk 22:19 And He took bread, gave thanks and broke it, and gave it to them, saying, "This is My body which is given for you; do this in remembrance of Me."
Luk 22:20 Likewise He also took the cup after supper, saying, "This cup is the new covenant in My blood, which is shed for you.
Another very important part of the Passover service is foot washing...
Joh 13:3 Jesus, knowing that the Father had given all things into His hands, and that He had come from God and was going to God,
Joh 13:4 rose from supper and laid aside His garments, took a towel and girded Himself.
Joh 13:5 After that, He poured water into a basin and began to wash the disciples' feet, and to wipe them with the towel with which He was girded.
Joh 13:6 Then He came to Simon Peter. And Peter said to Him, "Lord, are You washing my feet?"
Joh 13:7 Jesus answered and said to him, "What I am doing you do not understand now, but you will know after this."
Joh 13:8 Peter said to Him, "You shall never wash my feet!" Jesus answered him, "If I do not wash you, you have no part with Me."
Joh 13:9 Simon Peter said to Him, "Lord, not my feet only, but also my hands and my head!"
Joh 13:10 Jesus said to him, "He who is bathed needs only to wash his feet, but is completely clean; and you are clean, but not all of you."
Joh 13:11 For He knew who would betray Him; therefore He said, "You are not all clean."
Joh 13:12 So when He had washed their feet, taken His garments, and sat down again, He said to them, "Do you know what I have done to you?
Joh 13:13 You call Me Teacher and Lord, and you say well, for so I am.
Joh 13:14
If I then, your Lord and Teacher, have washed your feet, you also ought to wash one another's feet.
Joh 13:15
For I have given you an example, that you should do as I have done to you.
Joh 13:16 Most assuredly, I say to you, a servant is not greater than his master; nor is he who is sent greater than he who sent him.
Joh 13:17
If you know these things, blessed are you if you do them.